CHAPTER III
13. Northern Hemisphere of Globe by Mohammed ben Helal, 1275. _From Dorn's reproduction of original in London Asiatic Society's collection_ 28
14. Globe of Mohammed ben Muwajed el Ordhi, 1279. _From original in Math. Phys. Salon, Dresden_ 30
15. Globe of Diemat Eddin Mohammed, 1573. _From original in National Library, Paris_ 32
15a. Anonymous Arabic Globe, 1635. _From original in Library Professor David E. Smith, New York_ 34