begins to move about, then having claws by far sharper than those of any other beast he tears the womb, and as he grows larger he proceeds much further in his scratching: at last the time of birth approaches and there is now nothing at all left of it in a sound condition. 109. Just so also, if vipers and the winged serpents of the Arabians were produced in the ordinary course of their nature, man would not be able to live upon the earth; but as it is, when they couple with one another and the male is in the act of generation, as he lets go from him the seed, the female seizes hold of his neck, and fastening on to it does not relax her hold till she has eaten it through. The male then dies in the manner which I have said, but the female pays the penalty of retribution for the male in this manner:⁠—the young while they are still in the womb take vengeance for their father by eating through their mother, 503