Chapter XII.

1. In all sanguineous animals, flesh, and that which is like flesh, is between the skin and the bone, or what is analogous to bone: for the same relation which a spine bears to a bone, is also borne by flesh to that which is like flesh, in animals possessing bones and spines. The flesh can be divided in every direction, and so is unlike sinews and veins, which can only be divided in their length. The flesh disappears in emaciated animals, giving place to veins and fibres. Those animals which can obtain abundance of good food have fat instead of flesh.

2. Those that have much flesh have smaller veins and redder blood, and their intestines and stomachs are small; but those which have large veins and dark blood, and large intestines and great stomachs, have also less flesh, for those that have fat flesh have small intestines.