Note 507 — BOOK II. AN ACCOUNT OF THE WORLD AND THE ELEMENTS. (continued 2)

We are not to expect any great accuracy in these estimates, and we accordingly find, that our author, when referring to the subject in his 6th book, ch. 39, makes the shadow at Ancona 1⁄35 greater than the gnomon, while, in Venetia, which is more northerly, he says, as in the present chapter, that the shadow and the gnomon are equal in length. See the remarks of M. Alexandre in Lemaire, ut supra.