(Chapter 40) Footnote 1:

Misnumbered LX in the 1543 edition. In the 1555 edition, the order of chapters 39 and 40 is reversed. This chapter (39 in the 1555 edition) is retitled “On the Number of Bones and Cartilages.” The chapter on anatomical instruments is moved in 1555 from II 7 to I 41.