Now then we speak according to presented common names, but we must not only consider in these, but also assume if any thing else should be seen to be common, afterwards consider to what things this is consequent, and the quality of the things consequent to this, as those consequent to having horns are the possession of a rough muscular lining to the stomach, and the not having teeth in both jaws. Moreover to what things the possession of horns is consequent, for it will be evident why what has been mentioned is present with them, for it will be so in consequence of their possessing horns.
There is yet another mode of selection by analogy, since it is impossible to assume one and the same thing, which it is necessary to call sepium, spine, and bone, there are also things consequent to these, as if there were one certain nature of this kind.
Chapter 15
Some problems are the same from having the same medium, for instance, because all things are an antiperistasis, but of these some are the same in