“In the north the south lodestar is not seen; and in the south, the north is not seen.... By which say you certainly that men may environ all the earth, as well under as above, and turn again to his country, and always find men as well as in this country.... For ye witten well that they that turn toward the antarctic, be straight feet against feet of them that dwell under the transmontayne, as well as we and they that dwell under us be feet against feet.”
Of still more importance in shaping directly or indirectly the opinions of Columbus was the great work of Marco Polo. This Venetian traveller, after spending many years in China and Japan, and having the best of opportunities for observation, published the great work on which his reputation as a traveller and writer is founded. He not only described with considerable minuteness the countries which he visited, but he pictured, though with gross exaggerations, the great wealth of many of the eastern cities. Columbus supposed that these regions, still in the hands of infidels, could be reached by sailing westward across the Atlantic.
But there was another book that had more influence upon Columbus than all the others; and this was the “Imago Mundi” of Cardinal d’Ailly. It was a kind of encyclopædia of geographical knowledge, in which the author had endeavoured to bring together all the prevailing views in regard to the form of the earth. In the copy of this remarkable book, still preserved in the Columbian Library at Seville, there are still to be seen numerous marginal annotations by Columbus himself. These notes make us absolutely certain that the navigator studied very carefully and early became familiar with the beliefs of all the geographical writers of antiquity and of the Middle Ages.
It is natural to ask the question why, if the earth was known to be spherical, and if the compass was already in existence, voyages of discovery were so long delayed? If one looks at the geographical works of the time, one sees everywhere taught the notion that the unknown regions were peopled with monsters ready to devour any who approached. One of the pictures in the Nuremberg Chronicle, for illustration, represents the Atlantic as filled with monsters so huge as to be able and ready to lift any ship easily upon its back and dash it to destruction. The Arabs believed and taught that in the torrid zone the moisture was so much sucked up by the heat of the sun that the residue was impervious to the passage of ships. Popular credulity everywhere seemed to gain the mastery over science. The early Anglo-Saxon scholars believed that the earth was a globe; but in spite of all their teaching, we find in an early Anglo-Saxon tract, intended to convey abstruse information in the form of a dialogue, the following question and answer:—
“Question: Tell me, my son, why the sun is so red in the evening?
“Answer: Because it looketh down upon hell.”
It must be conceded that this doctrine was sufficiently discouraging to western navigation.
It should not, however, be forgotten that while views concerning the sphericity of the earth were gradually making their impression, geographical knowledge was extending itself through the efforts of explorers. The boldest adventurers were gradually pressing their way into the far north. The inhabitants of Iceland—perhaps from their geographical isolation—were especially adventurous. Within the present century the evidence has been made complete that America was visited and explored in the eleventh century, and that accounts of these explorations in detail became a part of the national literature. But Iceland was so isolated from the rest of Europe that these explorations seem to have made no impression, even if they were at all known. The first allusion to the discovery of America by the Scandinavians ever printed was that of Adam von Bremen, in his work issued from the press at Copenhagen in 1579. Although the work had been in manuscript for centuries, there is no evidence that these explorations made any impression upon the literature or knowledge of the time. If Columbus visited Iceland, it is probable that he became acquainted with the traditions of these western voyages. It is of course possible that he obtained positive information from the stories that may have been current among the seafaring men of Iceland in the fifteenth century. But the matter is left in doubt by the fact that no such knowledge was ever revealed by Columbus after his return; and it hardly seems probable that he would have kept such an item of information locked up in his own brain at a time when he was trying to bring every argument to bear upon the Portuguese and Spanish courts.
While these numerous intellectual purveyors were bringing to the mind of Columbus their varied stores of information, an event occurred which must have had a powerful influence in shaping and intensifying his purpose.
In the year 1474 there was living at Florence the venerable astronomer and geographer Toscanelli. This eminent savant, now seventy-eight years of age, after having enjoyed the honours of connection with nearly all the learned societies of that day, had been greatly interested in the recently published book of Marco Polo. From the account given by this Venetian traveller, Toscanelli had arrived at certain interesting views in regard to the size of the earth. He had satisfied himself that the open water between western Europe and eastern Asia could be crossed in a voyage of not more than three thousand miles. The letters of Toscanelli have been preserved, and they form a most interesting part of the history of this period. We cannot quote from them at any length, but the importance of the correspondence is sufficient to justify a concise statement of the particular significance of the letters.
In the first place, in one of the letters, dated in 1474, Toscanelli says that he had already written to the king of Portugal, urging upon him the practicability of reaching Japan and China by sailing directly west. He had accompanied this statement, moreover, with a map showing what, in his opinion, would be found in the course of the proposed voyage. Unfortunately, the original map of Toscanelli, so far as we know, has not been preserved. Copies of it, which we may presume to be substantially accurate, however, enable us to form a sufficient impression as to the general nature of his geographical views. He had no conception of another continent. On the contrary, he believed that the eastern part of Asia, excepting as it was fringed with Cipango (Japan) and other islands, presented its broad and hospitable front to any navigator bold enough to sail two or three thousand miles directly west from Portugal or Spain. These beliefs are important, because they are the identical ones afterward held by Columbus, not only at the time of his first voyage, but also even until the day of his death.