From Cave Paintings to the Internet A Chronological and Thematic Database on the History of Information and Media Cartography / Geography / Voyages / Travels Timeline

Map-making appears to predate written language. What may be the oldest map in the world, discovered in Ukraine in 1966, may date from about this time. Inscribed on a mammoth tusk, the map was found in Mezhirich, Ukraine. It has been interpreted to show dwellings along a river.

Catal Huyuk, or Çatalhöyük, a very large Neolithic and Chalcolithic settlement in southern Anatolia, of which the lowest layers date from around 7500 BCE, is the largest and best preserved Neolithic site found to date. It was first discovered in 1961.

A wallpainting found at this site may be the earliest landscape painting known, or it may be a map. However, some archaeologists have suggested that it is more likely a painting of a leopard skin instead of a landscape including a volcano, or a decorative geometric design instead of a map. The painting is preserved in the Museum of Anatolian Civilizations in Ankara.

A quarter-inch thick copper plate in the Hebei Provincial Museum at Shijiazhuang, Hebei Province, China, bears the world’s oldest map clearly marked with distances.

"The 2,300-year-old map marks the locations of buildings in the five mausoleums of Wang Cuo (344-313 BC), his queen, and his concubines. It is called the Zhao Yu Tu (“map of the area of the mausoleum”). “It is not only the oldest map ever found in China but the oldest numeral-bearing map in the world,” says Du Naisong, a researcher with the Palace Museum in Beijing’s Forbidden City. Thirty-seven inches long and 19 inches wide, the map marks more than 70 locations, and symbols, numerals, and epigraphs are inlaid with gold and silver. Unlike modern maps, the Zhao Yu Tu has south on top and north on the bottom. One-half inch equals 16.5 feet on the map’s scale" (http://www.archaeology.org/9803/newsbriefs/map.html, accessed 12-27-2009).

The Mawangdui Silk Texts (Chinese: 馬王堆帛書; pinyin: Mǎwángduī Bóshū), texts of Chinese philosophical and medical works written on silk, were found buried in Tomb no. 3 at Mawangdui, in the city of Changsha, Hunan, China in 1973. 

"They include the earliest attested manuscripts of existing texts such as the I Ching, two copies of the Tao Te Ching, one similar copy of Strategies of the Warring States and a similar school of works of Gan De and Shi Shen. Scholars arranged them into silk books of 28 kinds. Together they count to about 120,000 words covering military strategy, mathematics, cartography and the six classical arts of ritual, music, archery, horsemanship, writing and arithmetic" (Wikipedia article on Mawangdui Silk Texts, accessed 01-31-2010).

Most of the Mawangdui Silk Texts are preserved in the Hunan Provincial Museum.

Probably at the Library of Alexandria mathematician, astronomer, geographer, and astrologer Claudius Ptolemaeus (Greek: Κλαύδιος Πτολεμαίος , Klaúdios Ptolemaîos) writes the Almagest, the Cosmographia, and the Tetrabiblos.

In the Almgagest (in Greek, Η Μεγάλη Σύνταξις, "The Great Treatise", originally Μαθηματική Σύνταξις, "Mathematical Treatise") Ptolemy compiled the astronomical knowledge of the ancient Greek and Babylonian world, relying mainly on the work of Hipparchus, which had been written three centuries earlier.

The Almagest is the only surviving comprehensive treatise on astronomy from antiquity. It was preserved, like most of classical Greek science, in Arabic manuscripts, hence its familiar Arabic name. The work was first translated from Arabic into Latin from Arabic texts found in Toledo by Gerard of Cremona in the 12th century.

"Ptolemy formulated a geocentric model of the solar system which remained the generally accepted model in the Western and Arab worlds until it was superseded by the heliocentric solar system of Copernicus. Likewise his computational methods (supplemented in the 12th century with the Arabic computational Tables of Toledo), were of sufficient accuracy to satisfy the needs of astronomers, astrologers, and navigators, until the time of the great explorations. They were also adopted in the Arab world and in India. The Almagest also contains a star catalogue, which is probably an updated version of a catalogue created by Hipparchus. Its list of forty-eight constellations is ancestral to the modern system of constellations, but unlike the modern system they did not cover the whole sky (only the sky Ptolemy could see).”

Ptolemy’s Cosmographia “is a compilation of what was known about the world’s geography in the Roman Empire during his time. He relied mainly on the work of an earlier geographer, Marinos of Tyre, and on gazetteers of the Roman and ancient Persian empire, but most of his sources beyond the perimeter of the Empire were unreliable.

“Ptolemy also devised and provided instructions on how to create maps both of the whole inhabited world (oikoumenè) and of the Roman provinces. . . . Ptolemy was well aware that he knew about only a quarter of the globe.”

The maps in surviving manuscripts of Ptolemy’s Geography date only from about 1300, after the text was rediscovered by Maximus Planudes, a Byzantine scholar working in Constantinople.

♦The earliest printed editions of Ptolemy's Cosmographia are separately noticed in this database.

"Ptolemy's treatise on astrology, known in Greek as the Apotelesmatika ("Astrological Outcomes" or "Effects") and in Latin as the Tetrabiblos ("Four books"), was the most popular astrological work of antiquity and also had great influence in the Islamic world and the medieval Latin West. The Tetrabiblos is an extensive and continually reprinted treatise on the ancient principles of horoscopic astrology in four books (Greek tetra means "four", biblos is "book"). That it did not quite attain the unrivaled status of the Almagest was perhaps because it did not cover some popular areas of the subject, particularly electional astrology (interpreting astrological charts for a particular moment to determine the outcome of a course of action to be initiated at that time), and medical astrology" (Wikipedia article on Ptolemy, accessed 07-16-2009).

The Forma Urbis Romae, or Severan Marble Plan, a huge map of ancient Rome, was created under emperor Septimius Severus, and originally measured 18.10 meters (60ft) high by 13 meters (43ft) wide carved in 150 marble slabs mounted on an interior wall of the Templum Pacis. Only about 10-15% of the map survives, broken into 1,186 pieces.

"Created at a scale of approximately 1 to 240, the map was detailed enough to show the floor plans of nearly every temple, bath, and insula in the central Roman city. The boundaries of the plan were decided based on the available space on the marble, instead of by geographical or political borders as modern maps usually are.

"The Plan was gradually destroyed during the Middle Ages, with the marble stones being used as building materials or for making lime. In 1562, the young antiquarian sculptor Giovanni Antonio Dosio excavated fragments of the Forma Urbis from a site near the Church of SS. Cosma e Damiano, under the direction of the humanist condottiere Torquato Conti, who had purchased excavation rights from the canons of the church. Conti made a gift of the recovered fragments to Cardinal Alessandro Farnese, who entrusted them to his librarian Onofrio Panvinio and his antiquarian Fulvio Orsini. Little interest seems to have been elicited by the marble shards" (Wikipedia article on Forma Urbis Romae, accessed 12-23-2009).

♦ In 1999 Marc Levoy and members of his team at Stanford University began the Digital Forma Urbis Romae Project as a way of solving the jigsaw puzzle of the 1,186 marble fragments and 87 fragments known only from Renaissance drawings:

"First, we digitized the shape and surface of every known fragment of the Severan Marble Plan using laser range scanners and digital color cameras; the raw data collected consists of 8 billion polygons and 6 thousand color images, occupying 40 gigabytes. These range and color data have been assembled into a set of 3D computer models and high-resolution photographs - one for each of the 1,186 marble fragments. Second, this data has served in the development of fragment matching algorithms; to date, these have resulted in over a dozen highly probable, new matches. Third, we have gathered the Project's 3D models and color photographs into a relational database and supported them with archaeological documentation and an up-to-date scholarly apparatus for each fragment. This database is intended to be a public, web-based, research and study tool for scholars, students and interested members of the general public alike. Fourth, these digital and archaeological data, and their availability in a hypertext format, have the potential to broaden the scope and type of research done on this ancient map by facilitating a range of typological, representational and urbanistic analyses of the map, some of which are proposed here. In these several ways, we hope that this Project will contribute to new ways of imaging Rome" (http://graphics.stanford.edu/papers/forma-williams/, accessed 12-23-2009).

Around 550 Cosmas Indicopleustes (literally: "who sailed to India") wrote the copiously illustrated Christian Topography, a work partly based on his personal experiences as a merchant on the Red Sea and Indian Ocean in the early 6th century. It is thought that the author served as a monk on Mt. Sinai after spending a career at sea. The earliest and best manuscript of this work, dating from the ninth century, and containing an early flat earth world map, is preserved in the Vatican Library.

The author provides a description of India and Sri Lanka during of the 6th century. He seems to have personally visited the Kingdom of Axum in modern Ethiopia and Eritrea, India and Sri Lanka. In 522 CE, he visited the Malabar Coast (South India).

"A major feature of his Topography is Cosmas' worldview that the world is flat, and that the heavens form the shape of a box with a curved lid, a view he took from unconventional interpretations of Christian scripture. Cosmas aimed to prove that pre-Christian geographers had been wrong in asserting that the earth was spherical and that it was in fact modelled on the tabernacle, the house of worship described to Moses by God during the Jewish Exodus from Egypt" (Wikipedia article on Early World Maps, accessed 11-26-2008).

The periplus (literally "a sailing-around") of Hanno the Navigator, a Carthaginian colonist and explorer circa 500 BCE, which recounts his exploration of the West coast of Africa, is one of the earliest surviving manuscript documents listing in order the ports and coastal landmarks, with approximate distances between, that the captain of a vessel could expect to find along a shore.

In his periplus Hanno states that he brought new colonists to four Carthaginian settlements established where the chain of the Atlas Mountains reaches the Atlantic and then, having founded a new colony at the Tropic, proceeded from there to explore the coast of Africa as far as the Equator. It also contains a description of an active volcano and the first known report about gorillas.

The Hanno's periplus survives in a single Byzantine manuscript, which also contains various other texts, and dates from the 9th or 10th century—Codex Heidelbergensis 398. This manuscript, preserved in the Universitätsbibliothek, Heidelberg, is beautifully reproduced in digital form on their website. Hanno's text was first edited for publication in print by Sigismund Gelenius, and issued from Basel in 1533.

"The primary source for the account of Hanno's expedition is a Greek translation, titled Periplus, of a tablet Hanno is reported to have hung up on his return to Carthage in the temple of Ba'al Hammon whom Greek writers identified with Kronos. The full title translated from Greek is The Voyage of Hanno, commander of the Carthaginians, round the parts of Libya beyond the Pillars of Heracles, which he deposited in the Temple of Kronos. This was known to Pliny the Elder and Arrian, who mentions it at the end of his Anabasis of Alexander VIII (Indica):

" 'Moreover, Hanno the Libyan started out from Carthage and passed the Pillars of Heracles and sailed into the outer Ocean, with Libya on his port side, and he sailed on towards the east, five-and-thirty days all told. But when at last he turned southward, he fell in with every sort of difficulty, want of water, blazing heat, and fiery streams running into the sea" (Wikipedia article on Hanno the Navigator, accessed 05-30-2009).

Lambert of St. Omer, also known as Lambert of St. Bertin, compiles the Liber Floridus, a kind of encyclopedia of Biblical, chronological, astronomical, geographical, cartographic, theological, philosophical and natural history compiled from 192 different works.

"In this treatise Lambert compiled a chronicle or history that reaches to the year 1119; it contains various maps, including a mappamundi, which originally like the text, has a date at least earlier than 1125, and has survived in three forms: in the manuscripts of Ghent, Wolfenbüttel, and Paris. In spite of a clearly expressed intention of supplying a complete world map, the oldest copy, the Ghent manuscript, only includes Europe, two Macrobian-zone sketches and a T-O design. This particular manuscript copy seems to have been written by Lambert himself, certainly not later than 1125, and contains some remarkable peculiarities with regards to Europe. The Wolfenbüttel and Paris copies, dating from about 1150, are simply different copies from the same original, which was doubtless of Lambert's own draftsmanship (although in a monograph entitled Die Weltkarte des Martianus Capella, R. Uhden has pointed out that the world map contained in the Wolfenbüttel copy carries a legend ascribing the original to Martianus Capella. The correctness of the ascription is further verified by the identity of various other legends on the map with passages in the Satyricon or De Nuptiis Philologiae et Mercurii . . . by Martianus Capella). These maps, which are based upon Capella's design, contain an equatorial ocean but are quite different than the Macrobian zone-maps (Slide #201). The ecliptic is usually shown, with the twelve signs of the zodiac, and the generalization of the coastlines is rounded in nature. Most of these maps are characteristically oriented to the East (although some show a northern orientation), and have a large amount of text in the southern continent. The climatic zones may or may not be explicitly shown. Regularly shaped islands are usually found in the ocean surrounding the northern continent.

"While containing a less detailed Europe, both the Wolfenbüttel and Paris manuscripts possess a complete mappamundi, together with a special and interesting addition. Nowhere else in medieval cartography do we find greater prominence assigned to the unknown southern continent - the Australian land of the fabled Antipodes (termed Antichthon by the ancients). On the Paris manuscript, where this land occupies half of the circle of the earth, a long inscription defines this 'region of the south' in terms not unlike those used on the St. Sever - Beatus map (Slide #207D)" (http://www.henry-davis.com/MAPS/EMwebpages/217mono.html, accessed 12-26-2008)

The Tabula Peutingeriana is an itinerarium or Roman road map, showing the road network of the Roman Empire. It is a unique copy, made by a monk in Colmar, Alsace, in the thirteenth century of a map that was last revised in the fourth or early fifth century.  That, in turn, was a descendent of the map prepared under the direction of Marcus Vipsanius Agrippa, a friend of Augustus. After Agrippa's death the map was engraved on marble and placed in the Porticus Vipsaniae, not far from the Ara Pacis in Rome.

The Tabula Peutingeriana "is a parchment scroll, 0.34 m high and 6.75 m long, assembled from eleven sections, a medieval reproduction of the original scroll. It is a very schematic map: the land masses are distorted, especially in the east-west direction. The map shows many Roman settlements, the roads connecting them, rivers, mountains, forests and seas. The distances between the settlements are also given. Three most important cities of the Roman Empire, Rome, Constantinople and Antioch, are represented with special iconic decoration. Besides the totality of the Empire, the map shows the Near East, India and the Ganges, Sri Lanka (Insula Taprobane), even an indication of China. In the west, the absence of the Iberian Peninsula indicates that a twelfth original section has been lost in the surviving copy.

"The table appears to be based on "itineraries", or lists of destinations along Roman roads, as the distances between points along the routes are indicated. Travellers would not have possessed anything so sophisticated as a map, but they needed to know what lay ahead of them on the road, and how far. The Peutinger table represents these roads as a series of roughly parallel lines along which destinations have been marked in order of travel. The shape of the parchment pages accounts for the conventional rectangular layout. However, a rough similarity to the coordinates of Ptolemy's earth-mapping gives some writers a hope that some terrestrial representation was intended by the unknown compilers.

"The stages and cities are represented by hundreds of functional place symbols, used with discrimination from the simplest icon of a building with two towers to the elaborate individualized "portraits" of the three great cities. Annalina and Mario Levi, the Tabulas editors, conclude that the semi-schematic semi-pictorial symbols reproduce Roman cartographic conventions of the itineraria picta described by Vegetius, of which this is the sole testimony."

The map is named after Konrad Peutinger, a German humanist and antiquarian, who inherited it from Konrad Birkel or Celtes, who claimed to have "found" it somewhere in a library in 1494.  

"The map was copied for Ortelius and published shortly after his death in 1598. A partial first edition was printed at Antwerp in 1591 (Fragmenta tabulæ antiquæ) by Johannes Moretus. Moretus would print the full Tabula in December 1598, also at Antwerp."

"The Peutinger family kept the map until 1714, when it was sold. It bounced between royal and elite families until it was purchased by Prince Eugene of Savoy for 100 ducats; upon his death in 1737 it was purchased for the Habsburg Imperial Court Library (Hofbibliothek) in Vienna." 

It is preserved at the Österreichische Nationalbibliothek in Vienna.

Traders Niccolò and Maffeo Polo, the father and uncle of Marco Polo, were among the first Westerners to travel the Silk Road to China. In 1266 the Polos reached the seat of Kublai Kahn in the Mongol capital Khanbaliq, now Beijing.

Marco Polo, who wrote the famous account of the travels of his father and uncle, did not accompany them on this expedition.

Maffeo and Niccolò Polo set out on a second journey carrying the Pope's response to Kublai Khan, in 1271. This time Niccolò took his son Marco. When Marco Polo arrived at Kublai Khan's court he became a favorite of the khan and was employed in China for 17 years.

"In his book, Il Milione, Marco explains how Kubilai officially received the Polos and sent them back — with a Mongol named Koeketei as an ambassador to the Pope.. They brought with them a letter from the Khan requesting educated people to come and teach Christianity and Western customs to his people, and the paiza, a golden tablet a foot long and three inches wide, authorizing the holder to require and obtain lodging, horses and food throughout the Great Khan's dominion. Koeketei left in the middle of the journey, leaving the Polos to travel alone to Ayas in the Armenian Kingdom of Cilicia. From that port city, they sailed to Saint Jean d'Acre, capital of the Kingdom of Jerusalem."  

"The long sede vacante — between the death of Pope Clement IV, in 1268, , and the election of Pope Gregory X, in 1271— prevented the Polos from fulfilling Kublai’s request. As suggested by Theobald Visconti, papal legate for the realm of Egypt, in Acres for the Ninth Crusade, the two brothers returned to Venice in 1269 or 1270, waiting for the nomination of the new Pope (Wikipedia article on Niccolò and Marco Polo, accessed 04-04-2010).

While in prison in Genoa from 1298 to 1299 Marco Polo supposedly dictated a book to a romance writer, Rustichello da Pisa. His work, which was very frequently copied, was a rare popular success in the period before printing. 

"The impact of Polo's book on cartography was delayed: the first map in which some names mentioned by Polo appear was in the Catalan Atlas of Charles V (1375), which included thirty names in China and a number of other Asian toponyms. In the mid-fifteenth century the cartographer of Murano, Fra Mauro, meticulously included all of Polo's toponyms in his map of the world. Marco Polo's description of the Far East and its riches inspired Christopher Columbus's decision to try to reach Asia by sea, in a westward route. A heavily annotated copy of Polo's book was among the belongings of Columbus. Polo's writings included descriptions of cannibals and spice growers" (Wikipedia article on The Travels of Marco Polo, accessed 04-04-2010).

"His book, Il Milione (the title comes from either 'The Million', then considered a gigantic number, or from Polo's family nickname Emilione), was written in the Old French and entitled Le divisament dou monde ('The description of the world'). The book was soon translated into many European languages and is known in English as The Travels of Marco Polo. The original is lost, and we have several often-conflicting versions of the translations. The book became an instant success — quite an achievement in a time when printing was not known in Europe."

"An authoritative version of Marco Polo's book does not exist, and the early manuscripts differ significantly. The published versions of his book either rely on single scripts, blend multiple versions together or add notes to clarify, for example in the English translation by Henry Yule. Another English translation by A.C. Moule and Paul Pelliot, published in 1938, is based on the Latin manuscript which was found in the library of the Cathedral of Toledo in 1932, and is 50% longer than other versions. Approximately 150 variants in various languages are known to exist, and without the availability of a printing press many errors were made during copying and translation, resulting in many discrepancies" (Wikipedia article on Marco Polo, accessed 01-29-2010).

♦ From the standpoint of printing before its invention in the West, Polo's work contained the earliest detailed account of Chinese printed paper money that was widely available in Europe.  Carter, Invention of Printing in China 2nd ed (1955) 109-11.

In spite of its wide fame, recent scholars question whether Marco Polo actually went to China.

The Hereford Mappa Mundi preserved at England's Hereford Cathedral was drawn by "Richard of Haldingham or Lafford".

"Superimposed on to the continents are drawings of the history of humankind and the marvels of the natural world. These 500 or so drawings include images of around 420 cities and towns, 15 Biblical events, 33 plants, animals, birds and strange creatures, 32 images of the peoples of the world and 8 pictures from classical mythology. '... it is without parallel the most important and most celebrated medieval map in any form, . . . and certainly the greatest extant thirteenth-century pictorial manuscript' (Christopher de Hamel)."

Of the ten surviving manuscript copies of the Kitab Rudjdjar (literally "The book of Roger" in Arabic) or Tabula Rogeriana, the earliest surviving copy, preserved in the Bibliothèque nationale de France (MS Arabe 2221), has been dated to about 1300. It is copy of a world map drawn in 1154 by the Arab geographer, Abu Abd Allah Muhammad al-Idrisi al-Qurtubi al-Hasani al-Sabti, or simply El Idrisi, or  Muhammad al-Idrisi.

"Al-Idrisi worked on the accompanying commentaries and illustrations of the map for eighteen years at the court of the Norman King Roger II of Sicily. The map, written in Arabic, shows the Eurasian continent in its entirety, but only shows the northern part of the African continent. The map is actually oriented with the North at the bottom. It remained the most accurate world map for the next three centuries.

"Roger II of Sicily had his world map drawn on a circle of silver weighing about 400 pounds. The works of Al-Idrisi include Nozhat al-mushtaq fi ikhtiraq al-afaq - a compendium of the geographic and sociological knowledge of his time as well as descriptions of his own travels illustrated with over seventy maps; Kharitat al-`alam al-ma`mour min al-ard (Map of the inhabited regions of the earth) wherein he divided the world into 7 regions, the first extending from the equator to 23 degrees latitude, and the seventh being from 54 to 63 degrees followed by a region uninhabitable due to cold and snow.

On the work of al-Idrisi, S. P. Scott commented:

"The compilation of Edrisi marks an era in the history of science. Not only is its historical information most interesting and valuable, but its descriptions of many parts of the earth are still authoritative. For three centuries geographers copied his maps without alteration. The relative position of the lakes which form the Nile, as delineated in his work, does not differ greatly from that established by Baker and Stanley more than seven hundred years afterwards, and their number is the same. The mechanical genius of the author was not inferior to his erudition. The celestial and terrestrial planisphere of silver which he constructed for his royal patron was nearly six feet in diameter, and weighed four hundred and fifty pounds; upon the one side the zodiac and the constellations, upon the other-divided for convenience into segments-the bodies of land and water, with the respective situations of the various countries, were engraved" (Wikipedia article on Muhammad al-Idrisi, accessed 01-12-2009).

The oldest map of the African continent is created in China on silk. It is thought to be a copy of a map sculpted into rock.

The De Virga world map, drawn by Albertinus de Virga, contained a mention in small letters:

"A. 141.. Albertin diuirga me fecit in vinexia"

"Made by Albertinius de Virga in Venice in 141.."

(the last number of the date is erased by a fold in the map)

The map was "discovered" in a second-hand bookshop in 1911 in Srebrenica, Bosnia by Albert Figdor, a map collector, and it was analysed by Franz Von Weiser of the Austrian State University in Vienna. Authenticated photographs were taken at the time, which are preserved in the British Library. Regrettably the original map was stolen during an auction in 1932, and has never been recovered.  It may have been a source for the Venetian Fra Mauro map (circa 1450), with which it is generally consistent.

"The map is oriented to the North, with a wind rose centered in Central Asia, possibly the observatory of astronomer, mathematician and sultan, Ulugh Begh, in the Mongol city of Samarkand in Uzbekistan, or the western shore of the Caspian sea. The wind rose divides the map in eight sectors.

"The map is colored: the seas are left white, although the Red Sea is colored in red. Continental land is colored in yellow, and several colors are used for islands. The mountains are in brown, the lakes are in blue, and rivers are in brown.

"The extension shows a calendar with depictions of the signs of the zodiac and a table to calculate lunar positions"  (Wikipedia article on De Virga world map, accessed 01-12-2009).

Michael of Rhodes, a Venetian galley commander, writes a manuscript describing his knowledge of mathematics, ships and shipbuilding, navigation, and time reckoning. It contains some of the earliest surviving portolan aids to navigation and the world's first known treatise on shipbuilding.

Venetian monk Fra Mauro completes the Fra Mauro map, a circular planisphere drawn on parchment and set in a wooden frame, about two meters in diameter.

The map was discovered in the monastery of San Michel in Isola, Murano, where the Camaldolese cartographer had his studio. It is preserved in the Biblioteca Nazionale Marciana in Venice.

"The Fra Mauro map is unusual, but typical of Fra Mauro's portolan charts, in that its orientation is with the south at the top, one of the usual conventions of Muslim maps, in contrast with the Ptolemy map which has the north at the top.

"Fra Mauro was aware of the Ptolemy map, and commented that it was insufficient for many parts of the world:

"I do not think it derogatory to Ptolemy if I do not follow his Cosmografia, because, to have observed his meridians or parallels or degrees, it would be necessary in respect to the setting out of the known parts of this circumference, to leave out many provinces not mentioned by Ptolemy. But principally in latitude, that is from south to north, he has much 'terra incognita', because in his time it was unknown." (Text from Fra Mauro map)

"He recognized however the extent of the East given by Ptolemy, thereby suppressing the central position that Jerusalem had held on previous maps:

"Jerusalem is indeed the center of the inhabited world latitudinally, though longitudinally it is somewhat to the west, but since the western portion is more thickly populated by reason of Europe, therefore Jerusalem is also the center longitudinally if we regard not empty space but the density of population." (Text from Fra Mauro map)

"Fra Mauro regarded the world as a sphere, although he used the convention of describing the continents surrounded by water within the shape of a disc, but had no certainty about the size of the Earth:

"Likewise I have found various opinions regarding this circumference, but it is not possible to verify them. It is said to be 22,500 or 24,000 miglia or more, or less according to various considerations and opinions, but they are not of much authenticity, since they have not been tested." (Text from Fra Mauro map)

"The depiction of inhabited places and mountains, the map's chorography, is also an important feature. Castles and cities are identified by pictorial glyphs representing turreted castles or walled towns, distinguished in order of their importance."

"Fra Mauro also probably relied on Arab sources. This is suggested by the North-South inversion of the map, an Arab tradition examplified by the 12th century maps of Muhammad al-Idrisi, and the detailed information on the southeastern coast of Africa, which was brought by an Ethiopian embassy to Rome in the 1430s" (Wikipedia article on Fra Mauro map, accessed 01-12-2009).

A critical edition of the map was published by Piero Falchetta in 2006.

Gunther Zainer of Augsburg, Germany, issues the Etymologiae of Isidore of Seville. A medieval encyclopedia written in the seventh century, it contains a simple diagramatic world map in the so-called "T-O" style. This woodcut has been called the first map included in a printed book.

ISTC no. ii00181000.

Claudius Ptolemaeus's (Ptolemy's) Cosmographia or Geographia, translated from Greek into Latin by humanist Giacomo d'Angelo da Scarperia (Jacopo d’Angelo (Jacopus Angelus) da Scarperia )and edited by Angelius Vadius and Barnabas Picardus, is first published as a printed book in Vicenza, Italy by Hermannus Liechtenstein, without any maps.

ISTC no. ip01081000.

The first illustrated edition of Ptolemy's Cosmographia, translated by humanist Giacomo d'Angelo da Scarperia (Jacopo d’Angelo (Jacopus Angelus da Scarperia) and edited by  Philippus Beroaldus and others, containing 26 copperplate maps, is published in Bologna by Dominicus de Lapis, but with the erroneous colophon date of 23 June 1462.

For a long time this colophon date was thought to have been a misprint for 1482, but manuscripts found in Bologna set the publication date in 1477. "It thus becomes the first book with engraved maps, and also the first book with the maps by a known artist, the plates having been engraved by Taddeo Crevilli of Ferrara" (Lone, Some Noteworthy Firsts in Europe during the Fifteenth Century [1930]) 41).

ISTC no. ip01082000.

♦ You can view a digital facsimile of Hartmann Schedel's copy of this work from the Bayersiche Staatsbibliothek, München, at this link: http://daten.digitale-sammlungen.de/~db/0003/bsb00032959/images/index.html?id=00032959&fip=67.164.64.97&no=39&seite=135, accessed 01-01-2010.

Bernhard von Breydenbach, a wealthy canon of Mainz Cathedral, issues an extensively illustrated travel book, describing his pilgramage to Jerusalem entitled Peregrinatio in terram sanctam or Sanctae peregrinationes.

Von Breydenbach made the pilgrimage in 1483-4, taking with him, as the book explains, "Erhard Reuwich of Utrecht", a 'skillful artist', to make drawings of the sights. As the book relates, Reuwich also printed the first Latin edition of the book in his own house in Mainz, and it is also very probable that because Reuwich was the printer he took the opportunity to identify himself as the artist, since the creators of book illustrations were rarely identified at this time.

"Leaving in April 1483 and arriving back in January 1484, they travelled first to Venice, where they stayed for three weeks. They then took ship for Corfu, Modon and Rhodes - all still Venetian possessions. After Jerusalem and Bethlehem and other sights of the Holy Land, they went to Mount Sinai and Cairo. After taking a boat down the Nile to Rosetta, they took ship back to Venice."

"The Sanctae Peregrinationes, or the Peregrinatio in terram sanctam, was the first illustrated travel-book, and marked a leap forward for book illustration generally. It featured five large fold-out woodcuts, the first ever seen in the West, including a spectacular five-foot-long (1600 x 300 mm) woodcut panoramic view of Venice, where the pilgrims had stayed for three weeks. The book also contained a three-block map of Palestine and Egypt, centred on a large view of Jerusalem, and panoramas of five other cities: Iraklion, Modon, Rhodes, Corfu and Parenzo. There were also studies of Near Eastern costume, and an Arabic alphabet—also the first in print. Pictures of animals seen on the journey, including a crocodile, camel, and unicorn, were also included.

"The colophon of the book is a lively coat-of-arms of the current Archbishop of Mainz, which includes the first cross-hatching in woodcut.

"The book was a bestseller, reprinted thirteen times over the next three decades, including printings in France and Spain, for which the illustration blocks were shipped out to the local printers. The first edition in German was published within a year of the Latin one, and it was also translated into French, Dutch and Spanish before 1500. Additional text-only editions and various abridged editions were also published.

"The illustrations were later adapted by Michael Wolgemut for the Nuremberg Chronicle of 1493, and much copied by various other publishers" (Wikipedia article on Erhard Reuwich, accessed 12-01-2008).

ISTC no. ib01189000.

"In the same month in which their Majesties [Ferdinand and Isabella] issued the edict that all Jews should be driven out of the kingdom and its territories, in the same month they gave me the order to undertake with sufficient men my expedition of discovery to the Indies." So begins Christopher Columbus's diary.

The expulsion to which Columbus refers was almost as important in Jewish history as the Voyage of Columbus was in American history. Following the terms of the Edict of Expulsion, or Alhambra Decree, on July 31 those Jews who did not convert to Christianity were expelled from Spain. Estimates of the number of Jews expelled range from 130,000 to 800,000. It is thought that Jews represented at least 10% of the population of Spain before the expulsion.  Some of the expelled Jews were accepted in Holland, and some in Italy, but most settled in the Ottoman Empire or in Africa.

"On the evening of August 3, 1492, Columbus departed from Palos de la Frontera with three ships; one larger carrack, Santa María, nicknamed Gallega (the Galician), and two smaller caravels, Pinta (the Painted) and Santa Clara, nicknamed Niña after her owner Juan Niño of Moguer. They were property of Juan de la Cosa and the Pinzón brothers (Martín Alonso and Vicente Yáñez), but the monarchs forced the Palos inhabitants to contribute to the expedition. Columbus first sailed to the Canary Islands, which were owned by Castile, where he restocked the provisions and made repairs. On September 6, he departed San Sebastián de la Gomera for what turned out to be a five-week voyage across the ocean.

"Land was sighted at 2 a.m. on October 12, 1492, by a sailor named Rodrigo de Triana (also known as Juan Rodríguez Bermejo) aboard Pinta" (Wikipedia article on Christopher Columbus, accessed 01-10-2008).

Aboard the caravel Niña, sailing back from the New World, Christopher Columbus wrote an open letter to the monarchs of Spain, describing his monumental discoveries. When he docked in Lisbon, Portugal on March 14 Columbus added a postscript and sent the letter to the Escribano de Racion, Luis de Santangel, finance minister to Ferdinand II and the high steward or comptroller of the king's household expenditures. Santagel had convinced  Isabella I to back Columbus's voyage eight months earlier, and Santagel was the first convey the news of Columbus's success to Queen Isabella and King Ferdinand.

Santagel turned over the text of Columbus's letter to printer Pedro Posa in Barcelona, and as early as April 1, 1493, Posa issued a 4-page pamphlet in small folio entitled Epistola de insulis nuper inventis (Letter on Newly Discovered Islands). Only one copy of the original printing survives. It was discovered in Spain in 1889, and passed through the hands of antiquarian bookseller Maisonneuve in Paris before reaching antiquarian bookseller Bernard Quaritch in 1890. In 1892 Quaritch sold it to the Lenox Library founded by James Lenox. This library later merged with the New York Public Library where the pamphlet is preserved today. ISTC no. ic00756000.

Columbus's letter was the first eyewitness news account to become a bestseller. The second edition, published in Spanish in Valladolid, also survives only in a single copy. ISTC no. ic00756500.

The third edition, in Latin, was published in Rome by Stephen Plannck, probably in early May 1493. ISTC no. ic00757000.

The first illustrated edition, with woodcuts supposedly copied from drawings by Columbus, was issued by Michael Furter, for Johann Bergmann, de Olpe, in Basel, Switzerland, probably in May, 1493. ISTC no. ic00760000.

♦ You can view a digital facsimile of the Basel edition from the Bayerische Staatsbibliothek, München, at this link: http://daten.digitale-sammlungen.de/~db/0002/bsb00026585/images/index.html?id=00026585&fip=67.164.64.97&no=6&seite=8, accessed 01-02-2010.

Giuliano Dati translated the letter into Italian verse for publication in Rome June 15, 1493. ISTC no. id00045890. Dati's version was reprinted in Florence and Brescia in 1493. Of each printing of Dati's version only one copy survived.

Carter & Muir, Printing and the Mind of Man (1967) no. 35.

Printer Anton Koberger of Nuremberg publishes the Liber chronicarum written by the physician Hartmann Schedel.

A large-folio compendium of history, geography and natural wonders, the Liber chronicarum contained 298 printed leaves, including 1,809 illustrations from 645 woodcuts by or after painter and woodengraver Michael Wohlgemut (Wohlgemuth), his stepson Wilhelm Plydenwurff, and possibly some by Koberger's godson, the young Albrecht Dürer, who was apprenticed to Wohlgemut until 1490. Certain woodcuts were reproduced more than once, sometimes for the depiction of different people or cities. The images include a full-sheet map of Europe, a Ptolemaean world map, large and small city views, biblical and historical scenes, and portraits.

♦ You can view a black & white digital facsimile of the Latin edition from the Biblioteca de Andalucía at this link:  http://www.juntadeandalucia.es/cultura/bibliotecavirtualandalucia/catalogo_imagenes/grupo.cmd?path=10150, accessed 01-02-2010.

Koberger also issued a German translation by Georg Alt, entiled Das Buch der Croniken und Geschichten on December 23 of the same year.

♦ You can view a digital facsimile at the Herzogin Anna Amalia Bibliothek, Weimar at this link: http://ora-web.swkk.de/digimo_online/digimo.entry?source=digimo.Digitalisat_anzeigen&a_id=4218, accessed 01-02-2010.

Though the information in the Nuremberg Chronicle was rapidly superceded, it remained famous for its extraordinary graphic design, its printing, its woodcuts and descriptions of cities. One of the woodcuts depicts the paper mill established in Nuremberg by Ulman Stromer in 1390.

Probably because it was such a large and impressive volume, the work was a great commercial success, with an unusually large printings for a fifteenth century book:

"The Latin edition was printed in at least 1400 copies, of which more than 1200 still exist today" (Wagner, Als die Lettern laufen lernten. Medienwandel im 15. Jahrhundert [2009] no. 11 (describing the annotated copy of the author, Hartmann Schedel, which is preserved at the Bayerischen Staatsbibliothek, Munich).

Most probably fewer copies of the German edition were printed, as it remains rarer on the market. Between roughly 1980 and 2009 there were 188 auction sales recorded for the Latin edition and 35 sales of the German edition, some sales presumably representing the same copies being resold.

Remarkably, the original manuscript exemplars showing the exact arrangement of the text and illustrations for both the Latin and German editions, as well has other original documents pertaining to the publication of these works, were preserved. The exemplar for the Latin edition is in the Stadbibliothek Nürnberg. The exemplar for the German edition is in the Nuremberg City Library. Adrian Wilson, a book designer and historian of book design from San Francisco, issued an outstanding book in which he showed the relationship between these manuscript exemplars and the printed editions: The Making of the Nuremberg Chronicle (1976).

ISTC no. is00307000 (Latin). ISTC no. is00309000 (German).

Universalis cosmographia secundum Ptholomaei traditionem et Americi Vespucii aliorumque lustrationes, or the Waldseemüller Map, a large wall map of the world drawn by German cartographer Martin Waldseemüller, was one of the first maps to chart latitude and longitude precisely, following the example of Ptolemy, and the first map to use the name "America".

Waldseemüller also created globe gores, printed maps designed to be cut out and pasted onto spheres to form globes of the Earth. At the time he drew his wall map, Waldseemüller was working as part of the group of scholars of the Vosgean Gymnasium at Saint-Dié-des-Vosges in Lorraine, which then belonged to the Holy Roman Empire. The maps were accompanied by the book Cosmographiae Introductio produced by the Vosgean Gymnasium.  

"The Waldseemüller map depicts North and South America as two large continents. The main map shows the two continents slightly separated, while the small inset map in the top border shows them joined by an isthmus. The name "America" is placed on South America, this being the first map known to use this name. As explained in Cosmographiae Introductio, the name was bestowed in honor of Amerigo Vespucci.

"In depicting the Americas separate from Asia, the map shows a great ocean between the mountainous western coasts of the Americas and the eastern coast of Asia. The first historical records of Europeans to set eyes on this ocean, the Pacific, are recorded as Vasco Núñez de Balboa in 1513 or, Ponce de León in 1512 or 1513. Those dates are five to six years after Waldseemüller made his map. In addition, the map predicts the width of South America at certain latitudes to within 70 miles.

"Apparently among most map-makers until that time, it was still erroneously believed that the lands discovered by Christopher Columbus, Vespucci, and others formed part of the Indies of Asia. Thus some believe that it is impossible that Waldseemüller could have known about the Pacific, which is depicted on his map. The historian Peter Whitfield has theorised that Waldseemüller incorporated the ocean into his map because Vespucci's accounts of the Americas, with their so-called "savage" peoples, could not be reconciled with contemporary knowledge of India, China, and the islands of Indies. Thus, Waldseemüller reasoned, the newly discovered lands could not be part of Asia, but must be separate from it, a leap of intuition that was later proved uncannily precise.

"Most importantly, Mundus Novus, a book attributed to Vespucci (who had himself explored the extensive eastern coast of South America) was widely published throughout Europe after 1504, including by Waldseemüller's group in 1507. It had first introduced to Europeans the idea that this was a new continent and not Asia. It is theorised that this lead to Waldseemüller's separating America from Asia, depicting the Pacific Ocean, and the use of the first name of Vespucci on his map.

"The wall map consists of twelve sections printed from wood engravings measuring 18 x 24.5 inches (46 x 62 cm). Each section is one of four horizontally and three vertically, when assembled. The map uses a modified Ptolemaic conformal projection with curved meridians to depict the entire surface of the Earth."

"Of the one thousand copies of the wall map printed, only one complete copy is known. It was originally owned by Johannes Schöner (1477–1547), a Nuremberg astronomer, geographer, and cartographer. Its existence was unknown for a long time until its rediscovery in 1901 in the library of Prince Johannes zu Waldburg-Wolfegg in Wolfegg Castle in Württemberg, Germany by the Jesuit historian Joseph Fischer. It remained there until 2001 when the United States Library of Congress purchased it from Waldburg-Wolfegg-Waldsee for ten million dollars. Chancellor Angela Merkel of the Federal Republic of Germany symbolically turned over the Waldseemüller map on April 30, 2007, within the context of a formal ceremony at the Library of Congress, in Washington, DC. In her remarks, the chancellor stressed that the U.S. contributions to the development of Germany in the postwar period tipped the scales in the decision to turn over the Waldseemüller map to the Library of Congress as a sign of transatlantic affinity and as an indication of the numerous German roots to the United States. Since 2007 it has been permanently displayed in the Library of Congress, within a display case filled with argon. Prior to display, the entire map was the subject of a scientific analysis project using hyperspectral imaging with an advanced LED camera and illumination system to address preservation storage and display issues.

"Four copies of the globe gores are known still to exist. The first to be rediscovered was found in 1871 and is now in the James Ford Bell Library of the University of Minnesota. Another copy was found inside a Ptolemy atlas and is in the Bavarian State Library in Munich. A third copy was discovered in 1992 bound into an edition of Aristotle in the Stadtbücherei Offenburg, a public library in Germany. A fourth copy came to light in 2003 when its European owner read a newspaper article about the Waldseemüller map. It was sold at auction to Charles Frodsham & Co. for $1,002,267, a world record price for a single sheet map There has been some suggestion that a sheet of the map is from a second edition produced about 1515. Its preservation seems to be due to the several sheets being bound into a single cover by Schöner" (Wikipedia article on Waldseemüller Map, accessed 11-10-2009).

Kūnyú Wànguó Quántú (坤輿萬國全圖: "A Map of the Myriad Countries of the World") is the first European-style World map in Chinese. 5 ft (1.52 m) high and 12 ft (3.66 m) wide, it was printed from six large woodblocks and intended to be mounted on a folding screen. 

The map was drawn by Jesuit priest and polymath Matteo Ricci.

"Drawing of the map followed a first primitive map by Ricci, printed in 1584, named Yudi Shanhai Quantu (舆地山海全图). made in Zhaoqing, in 1584 by the Jesuit priest, Matteo Ricci. Ricci was one of the first Western scholars to live in China, master Chinese script and the Classical Chinese language. Ricci created smaller versions of the map at the request of the governor of Zhaoqing at the time, Wang Pan, who wanted the document to serve as a resource for explorers and scholars.

"Later, Ricci was the first Westerner to enter Peking, bringing atlases of Europe and the West that were unknown to his hosts. The Chinese had maps of the East that were equally unfamiliar to Western scholars. In 1602, at the request of the Wanli Emperor, Ricci collaborated with Mandarin Zhong Wentao, technical translator Li Zhizao. and other Chinese scholars in what is now Beijing to create what was his third and largest world map.

"In this map, European geographic knowledge, new to the Chinese, was combined with Chinese information to create the first map known to combine Chinese and European cartography. Among other things, this map revealed the existence of America to the Chinese. Ford W. Bell said: 'This was a great collaboration between East and West. It really is a very clear example of how trade was a driving force behind the spread of civilization.'

"Several prints of the map were made in 1602. Only seven original copies of the map are known to exist and only two are in good condition. Known copies are in the Vatican Apostolic Library Collection I; Vatican Apostolic Library Collection II; Japan Kyoto University Collection; collection of Japan Miyagi Prefecture Library; Collection of the Library of the Japanese Cabinet; a private collection in Paris, France and one recently sold in London (formerly in a private collection in Japan). No examples of the map are known to exist in China, where Ricci was revered and buried.

"Ferdinand Verbiest would later develop a similar but improved map, the Kunyu Quantu in 1674" (Wikipedia article on Impossible Black Tulip, accessed 01-13-2010).

In December 2009 The James Ford Bell Trust announced that in October 2009 it had acquired for the James Ford Bell Library at the University of Minnesota, Minneapolis, one of the two "good" copies of the Kūnyú Wànguó Quántú  from Bernard J. Shapero, a noted London dealer in rare books and maps in London, for $1 million. This was the second most expensive map purchase in history after the Library of Congress purchase of the Waldseemüller World Map. The James Ford Bell copy previously was in a private collection in Japan.

The first public exhibition of the map was held at the Library of Congress in January 2010.

Brewer, Protestant councillor and mayor, instrument maker, astronomer and engraver in Danzig (Gdańsk), Johannes Hevelius (Latin), also called Johannes Hewel, Johann Hewelke, Johannes Höwelcke in German, or Jan Heweliusz (in Polish), self-publishes Selenographia: sive, lunae descriptio. Besides an allegorical engraved title by Jeremias Falck after Adolf Boy, a portrait of Hevelius also engraved by Falck, after Helmick van Iwenhusen,  the book, published in small folio format, contains 110 plates on 89 sheets, drawn & engraved by the author (1 with volvelle, 3 double-page), and numerous  engravings within the text. 

The result of four years of observations, Selenographia was the first comprehensive atlas of the moon. The first state of the book does not contain the plate RRR, which is not called for in the plate list. Hevelius kept adding to his book as it went through the press; probably some copies were already in circulation by the time he had drawn and engraved plate RRR.

Son of a prosperous brewery owner, Hevelius made his own instruments, made his own drawings, did his own engraving, published his own books, and built the best observatory in Europe on beer proceeds. In the Selenographia he drew excellent moon maps, based on his own observations, and gave many new names to the features observable on the moon's surface such as seas, mountains, craters, borrowing nomenclature from terrestrial geography. For example he named an island of Sicily complete with a Mount Etna, and an island of Corsica, both in the Mediterranean Sea. A few of these names—the Alps, the Apennines, and the Caucasus—remain in use, but most of Hevelius's' nomenclature was superceded in the seventeenth century by that of Giovanni Battista Riccioli. 

Even more significant was his drawing of the moon in different states of libration; his descriptions of a librational cycle of shadow changes in the lunar details, his method of judging the libration by means of changes in apparent (telescopic) separation of a pair of lunar details, and his introduction of rudimentary lunar coordinate systems provided a sound basis for the work of subsequent astronomers. He also described a mounted lunar globe, perhaps the first of its kind, which allowed representation of librational movements.

The first part of the Selenographia is valuable for the history of optics. Hevelius describes an optical lathe for turning telescope lenses and gives methods for judging the parameters and qualities of lenses. He describes Christoph Scheiner's helioscope, which he eventually modified, the microscope and the military periscope. He illustrates telescopes that he made, which often had unusual fittings and complimentary devices. Hevelius also made observations of Saturn, the satellites of Jupiter, sunspots, comets and the star which he named "Mira." 

Zinner, Astronomische Instrumente 275-82.  Personal communication from Jörn Koblitz, The MetBase Library of Meteoritics and Planetary Sciences.

Cornelis a Beughem issues Bibliotheca mathematica et artificosa novissima. . . conspectus primus. This was the first independently published and comprehensive bibliography of mathematics, limited to books published from 1551 onward. Pages 465-526 contain a bibliography of atlases.

Polymath Carlos de Sigüenza y Gongóra prepares the first-ever map of all of New Spain.

"He also drew hydrologic maps of the Valley of Mexico. In 1692 King Charles II named him official geographer for the colony. As royal geographer, he participated in the 1692 expedition to Pensacola Bay, Florida under command of Andrés de Pez, to seek out defensible frontiers against French encroachment. He mapped Pensacola Bay and the mouth of the Mississippi: in 1693, he described the terrain in Descripción del seno de Santa María de Galve, alias Panzacola, de la Mobila y del Río Misisipi" (Wikipedia article on Carlos de Sigüenza y Gongóra, accessed 01-10-2009).

White Kennett, Bishop of Peterborough, England, publishes in London Bibliothecae Americanae Primordia. An Attempt Towards Laying the Foundation of an American Library, in Several Books, Papers, and Writings, Humbly given to the Society for Propagation of the Gospel in Foreign Parts. . . .

Published in an edition of 250 copies, this was the library of the first collector of historical documents on the continent of North America. It was also the first bibliography of Americana, carefully listing in chronological order books, charts, maps, and documents with a detailed alphabetical index.

Breslauer & Folter, Bibliography: Its History and Development (1984) no. 93.

German Geographer and Zoologist Eberhard August Wilhelm von Zimmerman publishes Specimen zoologiae geographicae, quadrupedem domicilia et migrationes sistens.

This was the first textbook of zoogeography, containing the first world map showing the distribution of mammals.

Hook & Norman, The Haskell F. Norman Library of Science and Medicine (1991) no. 2280.

The first catalogue of the Library of Congress was a ten-page pamphlet:

Catalogue of Books, Maps, and Charts, Belonging to the Library of the Two Houses of Congress.

This listed the original collection according to size:folios, quartos, octavos, and duodecimos, with estimated values for each, followed by nine maps and charts. 

In October 1803 the first supplement appeared:

Supplemental Catalogue of Books, Maps, Charts, Belonging to the Library of the Two Houses of Congress.

This 7-page pamphlet listed 180 volumes added since April 1802.

Sabin 15560 & 15561.

The Istanbul Engineering College Press in Istanbul issues the the Cedid Atlas Tercumesi (New Atlas). This was the first world atlas printed by Muslims. Only 50 copies were issued.

Pierre Méchain and Jean Delambre publish Base du système mètrique décimal in 3 volumes, 1806-10, followed by the conclusion of the work, Jean Baptiste Biot and François Arago's Recueil d’observations géodésiques, astronomiques et physiques (1821).

In 1788 the French Academy of Sciences, at the suggestion of Talleyrand, proposed the establishment of a new universal decimal system of measurement founded upon some “natural and invariable base” to replace Europe’s diverse regional systems. This project was approved by the Assemblée nationale in 1790 and a basic unit or “meter (metre)” of measurement proposed, which was to be one ten-millionth of the distance between the terrestrial pole and the Equator. In 1792 Méchain and Delambre were appointed to make the necessary geodetic measurements of the meridian passing through Dunkirk and Barcelona, from which the meter would be derived. The project was hampered by France’s political revolution, by the death of Méchain in 1804, and by the tedious calculations involved in converting one system to another; it was not until 1810 that Delambre was able to complete the final volume of the Base du système mètrique décimal.

Méchain and Delambre had determined the length of the meter by taking measurements over a meridian arc of 10 degrees. After Méchain’s death in 1804, the Bureau des Longitudes proposed that the meter’s length be redetermined more accurately by extending measurement of the arc of the meridian south to the Balearic Islands of Mallorca, Menorca and Ibiza. François Arago and Jean Baptiste Biot were assigned to this task. Arago was twenty years old at the start of this project. In 1806 he and Biot journeyed to Spain and began triangulating the Spanish coast. Their work was disrupted by the political unrest that developed after Napoleon’s invasion of Spain in 1807. Biot returned to Paris after they had determined the latitude of Formentera, the southernmost point to which they were to carry the survey. Arago continued the work until 1808, his purpose being to measure a meridian arc in order to determine the exact length of a meter.

After Biot's departure, the political ferment caused by the entrance of the French into Spain extended to the Balearic Islands, and the population suspected Arago's movements and his lighting of fires on the top of mola de l’Esclop as the activities of a spy for the invading army. Their reaction was such that he was obliged to give himself up for imprisonment in the fortress of Bellver in June 1808. On July 28 Arago escaped from the island in a fishing boat, and after an adventurous voyage he reached Algiers on August 3. From there he obtained a passage in a vessel bound for Marseille, but on August 16, just as the vessel was nearing Marseille, it fell into the hands of a Spanish corsair. With the rest the crew, Arago was taken to Roses in Catalonia, and imprisoned first in a windmill, and afterwards in a fortress, until the town fell into the hands of the French, and the prisoners were transferred to Palamós.

After three months' imprisonment, Arago and the others were released on the demand of the dey (ruler) of Algiers, and again set sail for Marseille on the November 28, but when within sight of their port they were driven back by a northerly wind to Bougie on the coast of Africa. Transport to Algiers by sea from this place would have required a delay of three months. Arago, therefore, set out over land, on what had to be a strenuous journey, guided by a Muslim imam, and reached Algiers on Christmas Day. After six months in Algiers, on June 21, 1809, Arago set sail for Marseille, where he had to undergo a monotonous and inhospitable quarantine in the lazaretto before his difficulties were over, roughly one year after he had first been imprisoned. The first letter he received, while in the lazaretto, was from Alexander von Humboldt—the origin of a scientific relationship which lasted over forty years.

In spite of the successive imprisonments, an escape, voyages, and other hardships he endured, Arago had succeeded in preserving the records of his survey; and his first act on his return home was to deposit them in the Bureau des Longitudes in Paris. As a reward for his heroic conduct in the cause of science, he was elected a member of the Académie des sciences at the remarkably early age of twenty-three, and before the close of 1809 he was chosen by the council of the Ėcole Polytechnique to succeed Gaspard Monge in the chair of analytic geometry. At the same time he was named by the emperor one of the astronomers of the Obsérvatoire royale, which remained his residence till his death, and in this capacity he delivered his remarkably successful series of popular lectures on astronomy from 1812 to 1845. Most of Arago's later scientific contributions were in physics, particularly optics and magnetism: he discovered the phenomena of rotary magnetism (the greater sensitivity for light in the periphery of the eye) and rotary polarization, invented the first polariscope, and performed important experiments supporting the undulatory theory of light. In his capacity as secretary of the Académie des sciences, he championed the photographic process invented by Louis Daguerre, announcing its discovery to the Académie in 1839, and using his influence to obtain publicity and funding for its inventor.

Arago’s results, together with geodetic data obtained in France, England and Scotland, were published in the Recueil d’observations géodésiques, issued as a supplement to Méchain and Delambre’s work 11 years after he carried the data back to France, in 1821. Political opposition to the new system of measurement may have contributed to the unusually long delay in publication.

As a tribute to Arago’s contribution, in 1994 the Arago Association and the city of Paris commissioned a Dutch conceptual artist, Jan Dibbets to create a memorial to Arago. Dibbets came up with the idea of setting 135 bronze medallions (although only 121 are documented in the official guide to the medallions) into the ground along the Paris Meridian between the northern and southern limits of Paris: a total distance of 9.2 kilometres/5.7 miles. Each medallion is 12 cm in diameter and marked with the name ARAGO plus N and S pointers. One of these was shown in the film, The Da Vinci Code.

Carter & Muir, Printing and the Mind of Man (1967) no. 260. Daumas, Arago: La jeunesse de la science, ch. IV. Hook & Norman, The Haskell F. Norman Library of Science and Medicine (1991) no. 1481. Alder, The Measure of the World (2003).

British naturalist, explorer, and evolutionist Alfred Russel Wallace publishes The Geographical Distribution of Animals.

Wallace studied the fauna of the Malay peninsula and was struck both with its resemblances to and differences from that of South America. His research expanded into this world-wide study—the first comprehensive world-wide study of zoogeography, illustrated with numerous thematic maps.

The first manned Apollo flights occur, including Apollo 8, which circumnavigates the moon on Christmas Eve.

American information scientist Henry G. Small of the Institute for Scientific Information publishes "Co-Citation in the Scientific Literature; A New Measure of the Relationship between Two Documents," Journal of the American Society for Information Science 24 (1973) 265-9.

Small's paper first described what he called "citation mapping," which enabled the use of citation data to create maps visualizing the structure of scientific activity. Citation mapping was co-discovered by Irina Marshakova in Moscow.

According to his paper, Mapping the World of Science, Eugene Garfield's Science Citation Index built on the principles of citation analysis, covered nearly 20,000,000 printed source articles and 300 million cited printed references over a 50-year period.

Gordon Cheers of Millennium House  publishes a world atlas called Earth. The World Atlas. Containing 576 pages with 154 maps and 800 photographs, the volume measures 610 x 469 millimeters and weighs over 30 kilos. The publishers describe it as the largest atlas ever published as a printed book.

"The book also includes four monster-sized gatefolds which, unfurled, measure six x four feet (1.82 x 1.21 meters) and reveal pinpoint sharp satellite images including shots of the earth and sky at night" (http://www.cnn.com/2008/TECH/science/10/16/earth.atlas/index.html#cnnSTCText, accessed 12-05-2008).

You could take a virtual tour of a few pages of the atlas on the Millenium House website at http://www.millenniumhouse.com.au/title-earth.html, accessed 10-2009.

The book was offered for sale in two versions: "Royal Blue," limited to 2000 copies, and available in bookstores, and "Imperial Gold," limited to 1000 copies and for sale only by Millenium House. In October 2009 Amazon.com offered a copy of an unspecified version for about $7200 plus $3.99 shipping and handling. There was also a regular trade edition available in a 325 x 250 mm format called Earth Condensed.

Johan Bollen of Los Alamos National Laboratory and six co-authors publish "Clickstream Data Yields High Resolution Maps of Science" in the open access online journal Plos ONE.  The map was based on clickstream data collected when online readers switched from one journal to another, allowing the collection of about one billion data points -- a far greater number and presumably more reflective of actual reading patterns than the prior method of citation analysis developed by the Institute for Scientific Information (Now Thomson Scientific's Web of Science) which traces the relationship of footnotes in scholarly journals.

"Maps of science derived from citation data visualize the relationships among scholarly publications or disciplines. They are valuable instruments for exploring the structure and evolution of scholarly activity. Much like early world charts, these maps of science provide an overall visual perspective of science as well as a reference system that stimulates further exploration. However, these maps are also significantly biased due to the nature of the citation data from which they are derived: existing citation databases overrepresent the natural sciences; substantial delays typical of journal publication yield insights in science past, not present; and connections between scientific disciplines are tracked in a manner that ignores informal cross-fertilization.

"Scientific publications are now predominantly accessed online. Scholarly web portals provide access to publications in the natural sciences, social sciences and humanities. They routinely log the interactions of users with their collections. The resulting log datasets have a set of attractive characteristics when compared to citation datasets. First, the number of logged interactions now greatly surpasses the volume of all existing citations. This is illustrated by Elsevier's announcement, in 2006, of 1 billion (1×109) article downloads since the launch of its Science Direct portal in April 1999. In contrast, around the time of Elsevier's announcement, the total number of citations in Thomson Scientific's Web of Science from the year 1900 to the present does not surpass 600 million (6×108). Second, log datasets reflect the activities of a larger community as they record the interactions of all users of scholarly portals, including scientific authors, practitioners of science, and the informed public. In contrast, citation datasets only reflect the activities of scholarly authors. Third, log datasets reflect scholarly dynamics in real-time because web portals record user interactions as soon as an article becomes available at the time of its online publication. In contrast, a published article faces significant delays before it eventually appears in citation datasets: it first needs to be cited in a new article that itself faces publication delays, and subsequently those citations need to be picked up by citation databases.

"Given the aforementioned characteristics of scholarly log data, we investigated a methodological issue: can valid, high resolution maps of science be derived from clickstream data and can clickstream data be leveraged to yield meaningful insights in the structure and dynamics of scholarly behavior? To do this we first aggregated log datasets from a variety of scholarly web portals, created and analyzed a clickstream model of journal relationships from the aggregate log dataset, and finally visualized these journal relationships in a first-ever map of science derived from scholarly log data" (http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0004803#pone.0004803-Brody1, accessed 03-19-2009).

NASA's announced that the Lunar CRater Observation and Sensing Satellite (LCROSS) and its companion rocket, which impacted in crater Cabeus near the Moon's south pole on October 9, 2009, generated a "significant amount" of water. 

This discovery has significant implications for the support of a manned base on the moon or for the generation of rocket fuel to further space exploration. 

Ethan Bloch, founder of Flowtown.com, creates the 2010 Social Networking Map.

This was intended as a tribute to XKCD’s ‘Map of Online Communities’ published in 2007. The differences between the two maps, reflective of extremely rapid changing in the social network world, are dramatic!