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. NOTES [97] Major, R. H. Life of Prince Henry the Navigator. London, 1868. This is one of the first, and, at the same time, one of the most satisfactory biographies of Prince Henry; Beazley, C. R. Prince Henry the Navigator. New York, 1895; Azurara, Gomez Eannes de. Chronicle of the Discovery and Conquest of Guinea. Tr. and ed. by Charles Raymond Beazley and Edward Prestage. (Hakluyt Society Publications. London, 1896. 2 vols.) [98] D’Avezac, M. A. P. Description et histoire des îles de l’Afrique. Paris, 1848; same author, Notice des découvertes faites au moyen âge dans l’Océan Atlantique. Paris, 1845; same author, Les îles fantastiques de l’Océan occidental au moyen âge. Paris, 1845; Margry, P. La conquête des îles Canaries. Paris, 1896; Beazley. Dawn of Modern Geography. Vol. III, chap. iv. The Canary Islands, and perhaps others in the eastern Atlantic, were known to the Romans, but appear to have been lost to the knowledge of the Europeans during the greater part of the middle ages, to be rediscovered in the period in which modern geographical exploration was being entered upon. [99] Ravenstein, E. G. The voyages of Diogo Cão and Bartholomew Diaz. (In: Geographical Journal. London, 1900. Vol. XVI, pp. 625-655.) [100] Beazley. Dawn of Modern Geography. Vol. II, chap. v; Vol. III, chap. ii; Yule, H. The Book of Sir Marco Polo, the Venetian, concerning the Kingdoms and Marvels of the East. London, 1903. 2 vols. [101] Nordenskiöld, A. E. Facsimile Atlas. Stockholm, 1889; same author, Periplus. Stockholm, 1897; Stevenson, E. L. Portolan Charts, their origin and characteristics. New York, 1911; same author, Genoese World Map, 1457. New York, 1912; same author, Facsimiles of Portolan Charts. New York, 1916. From the above-named list of works, to which numerous additions might be made, a general notion of the beginnings of modern cartography can be obtained.