and geometrician Sir Isaac Newton, Knight, most worthy President of the Royal Society of London, for the promotion of knowledge, and to the Committee and Members of the same Society these globes with befitting humility are dedicated by C. John Senex. London.” Further descriptive details of these globes it has not been possible to obtain. The Biblioteca Real of Madrid possesses a terrestrial globe by Senex (Fig. 122), which bears the title legend, “A new and most correct Globe of the Earth laid down from the latest observations from the most judicious astronomers, navigators, & travelers, by John Senex, F. R. S. Now made and sold by Dudley Adams (only)[136] with all the latest discoveries together with many new improvements etc. 1793.” This globe has a diameter of about 40 cm., is furnished with a broad band which serves as a horizon circle, a meridian circle of brass within which it is made to revolve, and a tripod base. Its three fluted support columns are strengthened in their position by three curved iron braces which carry at their juncture a short carved post, through a slot in which the brass meridian is movable. While the surface of the sphere is somewhat injured, being crossed by numerous cracks, the engraved map is fairly legible in all of its parts. [Illustration: Fig. 122. Terrestrial Globe of John Senex, 1793.] The British Museum likewise possesses one of Senex’s terrestrial globes, which seems to be practically like that to be found in the Madrid Library. It will have been noted that many of those reputed to have been globe makers in these early years did not actually apply themselves to the constructive mechanical work, this being passed over to skilled artisans, to workers in metal and wood, to engravers and to mathematical instrument makers, who, if possessing generally recognized ability, often insisted on having their names associated in the author legends with the real authors of the globes. Nicolas Bion (1652-1733) may be cited as an excellent example of such a skilful workman, achieving in his day great distinction as a globe maker.[137] He seems not to have thought of himself as one meriting special honors as geographer, cartographer or astronomer (Fig. 123). By reason of his marked abilities, exhibited in the manufacture of mathematical instruments, he was honored by his royal patron with the title Engineer of the King for Mathematical Instruments. Through his principal work,[138] a treatise on the construction and uses of globes in which the subject is treated in both a theoretical and a practical manner, he is entitled to rank with the leaders of the century in this particular field of scientific endeavor. True to the spirit of the age Bion gave much thought to the idea of reform in the matter of globe construction, especially in the matter of fashioning globe gores and their attachment to the surface of the sphere. He seems to have prospered in his business, and we are told by his son that he constructed numerous