Vol. II: XIV. Anatomy, Zoology and Physiology: 817.
The Da Vinci Notebooks
Describe the various forms of the intestines of the human species, of apes and such like. Then, in what way the leonine species differ, and then the bovine, and finally birds; and arrange this description after the manner of a disquisition.
Miscellaneous notes on the study of Zoology (818-821).