which name is placed southeast of Africa, and the name “Patalis Regio” appears southwest of South America. [Illustration: Fig. 50. Nancy Globe, ca. 1530.] [Illustration: Fig. 50a. Globe of Jacob Stamfer, 1539.] [Illustration: Fig. 50b. Nancy Globe in Hemispheres.] Gemma Frisius (1508-1555), a native of Docum (Fig. 51), and for a number of years professor of medicine and mathematics in the University of Louvain,[216] issued a little book, in the year 1530, bearing the title ‘De principiis Astronomiae et Cosmographiae, deque usu globi, ab eodem editi, item de orbis divisione et insulis, rebusque nuper inventis ... Antverp, 1530.’[217] It seems probable that this was issued to serve as explanatory text for a globe or globes he had constructed or was preparing to construct. In it we have one of the earliest technical yet practical explanations of the parts and uses of the globe, and a somewhat detailed statement how such instruments may be serviceably employed in cosmographical studies. On the title-page there appears the representation of a globe resting on a base having three feet, which has been thought to be a representation of his completed work.[218] We are told in his ‘Epistola salutatoria,’ at least in an implied manner, that there were to be numerous copies of the globes, seeing that they were intended for the trade, and Roscelli’s statement would lead us to believe that they had found their way into Italy. All copies, however, appear to have been lost until a few years since, when both a terrestrial and a celestial globe of Frisius’ making was found in the Gymnasium Francisceum of Zerbst, to which discovery a very considerable interest and importance attaches. In a paper read before the International Congress of Americanists in 1904, Dr. W. Walter Ruge, all too briefly, describes them, from which paper the following information is taken.[219] [Illustration: Fig. 51. Portrait of Gemma Frisius.]