Читать книгу Terrestrial & Celestial Globes - Edward Luther Stevenson - Страница 14

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Increasing interest in geographical discovery and maritime enterprise in the fourteenth and the fifteenth century.—Awakened interest in globe construction.—Martin Behaim and his globe of the year 1492.—The Laon globe.—Christopher and Bartholomew Columbus and their interest in globes.—John Cabot and his globe.—Globes of Johannes Stöffler.—Conrad Celtes and his part in arousing an interest in globes.

THE fourteenth century witnessed among the peoples of Italy and of the Iberian coast regions a rapidly rising interest in maritime enterprise. The expansion of Europe, which for two centuries had been overland and eastward, was now becoming oceanic, with an outlook southward and westward into the Atlantic. In the fifteenth century, under the inspiration of Prince Henry the Navigator, the Portuguese were feeling their way down the coast of Africa, adding year by year to their knowledge of hitherto unknown lands;97 the Atlantic island groups, one by one, were discovered or rediscovered,98 and in 1487 Bartholomew Diaz turned the Cape of Good Hope and opened a new way to the Indies of the East.99 Through all these enterprises a new and vigorous stimulus was given to interest in geographical studies, just as an awakening had followed the disclosure of the riches of the East by Carpini, Rubruquis, and especially by Marco Polo in the earlier post-crusading years.100

Out of this lively interest in all that pertained to the expansion of knowledge concerning the various regions of the earth came a desire for better map making,101 and attention was again intelligently directed to the construction of terrestrial globes on which to represent the most recently discovered seas, islands, and continental coasts.

It was Martin Behaim of Nürnberg (1459–1507),102 who, in so far as we have knowledge, constructed one of the first modern terrestrial globes (Fig. 21), and it may, indeed, be said of his “Erdapfel,” as he called it, that it is the oldest terrestrial globe extant. Behaim (Fig. 22) belonged to the merchant class of a flourishing South German city. He took advantage of the opportunities which were offered him for travel, though it is hardly probable that he is entitled to that renown as an African coast explorer with which certain of his biographers have attempted to crown him, nor does it appear that he is entitled to a very prominent place among the men famed in his day for their astronomical and nautical knowledge. It was doubtless for reasons primarily commercial that he first found his way to Portugal, where, shortly after his arrival, probably in the year 1484, he was honored by King John with an appointment as a member of a nautical or mathematical Junta. During his earlier years in Portugal he was connected with one or more expeditions down the coast of Africa, was knighted by the king, presumably for his services, and made his home for some years on the island of Fayal. In the year 1490 he returned for a visit to his native city, Nürnberg, and there is reason for believing that on this occasion he was received with much honor by his fellow townsmen. It was the suggestion of George Holzschuher, member of the City Council, and himself somewhat famed as a traveler, that eventually brought special renown to our globe maker, for he it was who proposed to his colleagues of the Council that Martin Behaim should be requested to undertake the construction of a globe on which the recent Portuguese and other discoveries should be represented. From a record on the globe itself, placed within the Antarctic circle, we learn that the work was undertaken on the authority of three distinguished citizens, Gabriel Nutzel, Paul Volckamer, and Nikolaus Groland.103 It is an interesting fact that we are able to follow in detail the construction of the globe through its several stages, as the accounts of George Holzschuher, to whom was entrusted the general supervision of the work, have been preserved.104 From his report, presented at the conclusion of the undertaking, we learn the names of those who participated in the production of the globe; we learn the amount received by each for his labors, and that the total cost to the city for the completed product was something less than seventy-five dollars. Information is given therein as to the division of the work; how the spherical shell was prepared; how the vellum covering was fitted to the sphere; how the rings and the globe supports were supplied; finally, how the artist, Glockenthon, transferred the map to the prepared surface of the ball and added to the same the several miniatures, illustrating in rich color a variety of subjects.

Fig. 21. Globe of Martin Behaim, 1492.

Fig. 22. Portrait of Martin Behaim.

The globe, which still belongs to the Behaim family, was removed in the year 1907, by Baron W. Behaim, from his residence in Egedienplatz, Nürnberg, to the Germanic Museum, where it may now be found. It originally stood on a tripod base of wood, but this was later replaced by one of iron. The iron meridian circle is doubtless the work of Behaim himself, while its brass horizon circle probably dates from the year 1510.105

In his scholarly work Ravenstein thus describes this remarkable monument of a period in which there was a rapid expansion of geographical knowledge. “The globe has a circumference of 1595 mm., consequently a diameter of 507 mm. or 20 inches. Only two great circles are laid down upon it, viz., the equator, divided into 360 degrees, and the ecliptic studded with the signs of the zodiac. The Tropics, the Arctic and the Antarctic circles are likewise shown. The only meridian is drawn from pole to pole 80 degrees to the west of Lisbon. The sea is colored a dark blue, the land a bright brown or buff with patches of green and silver, representing forests and regions supposed to be buried beneath perennial ice and snow. Perhaps the most attractive feature of the globe consists of 111 miniatures, for which we are indebted to Glockenthon’s clever pencil. The vacant space within the Antarctic circle is occupied by a fine design of the Nürnberg eagle with the virgin’s head, associated with which are the arms of the three chief captains by whose authority the globe was made. … There are, in addition, 48 flags (including 10 of Portugal) and 15 coats of arms, all of them showing heraldic colors. The miniatures represent a variety of subjects. Forty-eight of them show us kings seated within tents or upon thrones; full-length portraits are given of four Saints (St. Peter, St. Paul, St. Matthew, and St. Iago), of missionaries instructing natives, and of travelers. Eleven vessels float upon the sea, which is peopled by fishes, seals, sea-lions, sea-cows, sea-horses, sea-serpents, mermen, and a mermaid. The land animals include elephants, leopards, bears, camels, ostriches, parrots, and serpents. … The only fabulous beings which are represented among the miniatures are a merman and a mermaid, near the Cape Verde Islands, and two Sciapodes in central South Africa, but syrens, satyrs, and men with dogs’ heads are referred to in some of the legends. Nor do we meet with the ‘Iudei clausi,’ or with a ‘garden of Eden,’ still believed in by Columbus. … The globe is crowded with over 1100 place names and numerous legends in black, red, gold, or silver.”106

The legends, in the South German dialect of the period, are very numerous (Fig. 23), and are of great interest to students of history and of historical geography. The following will serve to indicate the character of Behaim’s numerous legends. “Nach cristi unsers lieben hern gepurt 1431 jar also regiert in portugal jinfante don pedro wurden nach notlusse zegericht zway schiff auf 2 Jar gespeisst von den hochgeburnen Jnfanten don heinrichen dess koniks aufs portogalli bruder zu erfahren wass do wer hinder sanct Jacob finisterre weliche schiff also gerüst segelten alweg nach den untergang der sonnen bey 500 teutsche meilen zuletst wurden sy ains tags ansichtig dies 10 inseln und aufs landt trettendt funden nichts dann wildness und vögel die waren so zam dass sy vor niemandt flohen aber von leutten oder thieren mit vier füssen war von wegē der wildnuss keins darkhumen zu wohen um desswillen die vögel mit scheuh waren also wurden sy geheissen insuln dos azores das ist auf teutsch so vil als der habichen inseln und umb weliche wellen der könik von portugal das ander jar schikt 16 schiff mit allerley zame thiere und liess auf jede insel sein tail thun und darzu multiplieieren.” This legend, which lies to the southeast of the Azores Islands, reads in translation: “1431 years after the birth of our dear Lord, when there reigned in Portugal the Infant Don Pedro, the infant Don Henry, the King of Portugal’s brother, had fitted out two vessels and found with all that was needed for two years, in order to find out what was beyond the St. Jacob’s Cape of Finisterre. The ships thus provisioned sailed continuously to the westward for 500 German miles, and in the end they sighted these ten islands. On landing they found nothing but a wilderness and birds which were so tame that they fled from no one. But of men or of four footed animals none had come to live there because of the wildness, and this accounts for the birds not having been shy. On this ground the islands were called dos Azores, that is, Hawk Islands, and in the year after, the king of Portugal sent sixteen ships with various tame animals and put some of these on each island there to multiply.”107

Fig. 23. Globe of Martin Behaim in Hemispheres.

The following legend relates to the islands of Antilia. “Als man zelt nach cristi gepurt 734 jar als ganz hispania von dn̄ heiden auf affrica gewonon wurdt do wurdt bewont di obgeschriben Insuln Antilia genant Septe citade von einem erzbischoff von porto portigal mit sech andern bischoffs und andern cristen man und frawen dj zu sciff von hispanie das geflohen kommen mit Irem vieh hab und gut anno 1414 ist ein schiff aus hispania ungefert darbei gewest am negsten.” “In the year 734 of Christ when the whole of Spain had been won by the heathen of Africa, the above island Antilia called Septa Citade (Seven Cities) was inhabited by an archbishop from Porto in Portugal, with six other bishops and other Christians, men and women, who had fled thither from Spain by ship, together with their cattle, belongings and goods. 1414 a ship from Spain got nighest it without being endangered.”108

Through the inspiration of Behaim the construction of globes in the city of Nürnberg became a new industry to which the art activities of the city greatly contributed. The chief magistrate induced his fellow citizen to give instruction in the art of making such instruments, yet this seems to have lasted but a short time, for we learn that not long after the completion of his now famous “Erdapfel,” Behaim returned to Portugal, where he died in the year 1507.

Martin Behaim’s map of the world was drawn on parchment which had been pasted over a large sphere. The Laon globe,109 apparently following closely in time the former, is an engraved and gilded copper ball, having a diameter of 17 cm. There is evidence that at one time it was part of an astronomical clock.110 The engraved surface, on which appear the outlines of continents and islands, is well preserved. It has two meridian circles, which intersect at right angles and which can be moved about a common axis, likewise a horizon circle which is movable. Numerous circles appear engraved on the surface of the ball, including meridians and parallels. The prime meridian passes through the Madeira Islands, a fact which suggests a Portuguese origin, since these islands are generally thought to have been discovered by Lusitanian seamen. One hundred and eighty degrees east of this prime meridian, a second meridian is engraved, equally prominent, passing through the middle of the continent of Asia, and 90 degrees still farther to eastward is a third. Each of these meridians is divided into degrees, which are grouped in fifths and are numbered by tens, starting at the equator. The meridians are intersected by a number of parallels, lightly engraved in the northern hemisphere, less distinct in the southern, and represent the seven climates employed by the cosmographers of the Greek and Roman period, as well as by those of the middle ages, in their division of the earth’s surface.

As to its geographical representations, this terrestrial globe appears to be older than that of Martin Behaim, yet at the southern extremity of Africa we find the name “Mons Niger,” inscribed with the legend “Huc usque Portugalenses navigio pervenere 1493.”

The great enterprise of Christopher Columbus (Fig. 24), wherein he may be said to have achieved a final victory for the doctrine of a spherical earth, entitled his name to a place of prominence in the history of terrestrial globes. That Columbus himself constructed globes, as has been sometimes inferred from a statement of Las Casas, may, however, be questioned, since this statement touches the reputed correspondence between Columbus and Toscanelli, which correspondence, in the light of the very searching studies of Mr. Henry Vignaud, must now be considered to be of doubtful authenticity.111 It appears, however, from this letter that the famous Italian cosmographer, Pauolo Toscanelli, himself was accustomed to explain problems arising in the field of discovery by the use of the globe, and Las Casas tells us that Columbus resolved to write to him, making known his intentions, which he desired to be able to fulfil, and sent to him a globe through Lorenzo Girardi, a Florentine, at that time residing in Lisbon.112 Ferdinand Columbus, referring to this incident, says that “the globe was a small one.”113 In referring to Bartholomew, the son of Christopher Columbus, Las Casas observes that “he was a man of prudence and of great intelligence in all matters pertaining to the seas. I believe not much less learned in cosmography and in what relates thereto, the making of navigator’s charts and globes and other instruments of that kind.”114 Again, we find in a letter which Christopher Columbus directed to their Catholic Majesties, that he “sent to their Majesties a certain round representation.”115 None of these references to globes, as before stated, necessarily give us to understand that Christopher Columbus was a globe maker. Certain it is that none is now known attributed to him or to his son.

Fig. 24. Lorenzo Lotto Portrait of Columbus.

The explorer, John Cabot (1450–1498) (Fig. 25), is likewise reputed to have been interested in the construction of globes. In a dispatch sent from London, December 18, 1497, by the envoy Raimondi di Soncino to the Duke of Milan, we read that “this Master John has a description of the world on a map, and also on a solid sphere, which he has made, and it shows where he landed, and that sailing toward the east (west) he had passed far beyond the region of the Tanais.”116

Fig. 25. Portrait of Sebastian Cabot, Son of John Cabot.

That terrestrial globes were constructed toward the close of the fifteenth century is of significance, not only as a response to a new desire for more nearly accurate representation of the earth’s surface than could be set forth on a plane map, but it is likewise significant by reason of the fact that such globes as were constructed served to demonstrate the value of globe maps, and this value once demonstrated, they served to awaken a still further interest in globe making, which bears abundant fruitage in the following century.

There is a very remarkable celestial globe of the fifteenth century now belonging to the Lyceum Library of Constance, Switzerland. It is the work of Johannes Stöffler (1452–1531),117 at one time a pastor in the town of Justingen, later a professor of mathematics in the University of Tübingen, where he achieved renown as mathematician, astronomer, cosmographer, and mechanic. It appears from the title of a publication attributed to Stöffler, ‘De artificiosa globi terrestris compositione,’118 that he was a maker of terrestrial globes, though no such globe of his is now known, and from his letters to Reuchlin we learn that he made no less than three celestial globes.119 One of the latter he sent to his friend, Probst Peter Wolf of Denkendorf, which represented the movements of the sun and of the moon. A second was constructed for Bishop von Dalberg of Worms, on which the stars were represented in gold.120 Nothing further is definitely known of these two globes. A third was constructed for Bishop Daniel of Constance, which is the one now to be found in that city’s library.121 This sphere has a diameter of 48 cm., rests upon a wooden base, and is furnished with a meridian and with a horizon circle. The forty-eight constellations of Ptolemy are represented on a dark background and are outlined in accord with recognized traditions. To a few of the constellations double names are given, as “Hercules” and “Genuflexus,” “Auriga” and “Agitator”. Stars of the first magnitude are especially distinguished by name, the majority of which are of Arabic origin, and more than one thousand stars are clearly indicated.

To the globe makers themselves, who were active agents in creating a demand for globes, there should here be added the name of Conrad Celtes (1459–1508),122 the distinguished German humanist, as that of one who contributed most in the first years of modern times toward arousing an interest in the use of globes in the schools. Aschbach, in his History of the Vienna University,123 tells us of the school founded in Vienna in the year 1510 by the Emperor Maximilian I, and of the instruction given in this school by Celtes. We are informed that in his lectures on mathematical geography he introduced a good text of Ptolemy in the original Greek; this he translated into Latin, interpreting the same in German, explaining the several sentences by reference to a terrestrial and to a celestial globe. Having no record that such a method had been earlier employed we may therefore conclude that this distinguished teacher was the first to proceed in the manner designated, that is, he was the first in modern times to make use of globes in geographical and astronomical instruction.