Chapter III.

1. Oviparous quadrupeds with feet copulate in the same manner: in some, the male mounts upon the female, like viviparous animals, as in the marine and land turtle, for they have an intromittent organ by which they adhere together, as the trygon and frog, and all such animals.

2. But the apodous long animals, as serpents and murænæ, are folded together, with the abdomens opposite, and serpents roll themselves together so closely, that they seem to be but one serpent with two heads. The manner of the whole race of saurians is the same, for they unite together in the same kind of fold.