(Chapter 40) Footnote 15:

This sentence was rewritten to end as follows for the 1555 edition: “— since the occiput consists usually of three bones, and many vertebrae, not counting the epiphyses, of two and several of three bones; and the pectoral bone is constructed of more bones in some persons than in those who have attained their full growth; and the bones articulated to the sacrum are also made of three bones each, so it is possible for anyone to make up the number of bones acording to his own judgement.”