1. Different localities produce a variety of dispositions, as mountainous and rough places, or smooth plains. They are more fierce and robust in appearance in mountains, as the swine of Athos; for the males of those which inhabit the plains cannot endure even the females of the other kind: and different situations have great influence on the bite of wild animals. All the scorpions about Pharus and other places are not painful, but in Caria and other localities they are frequent, and large, and fierce, and their sting is fatal to either man or beast, even to sows, which are but little influenced by the bite of other creatures, and black sows are more easily affected than others. The swine die very soon after being stung, if they come near the water.
2. The bite also of serpents varies much; for in Libya the asp is found, from which they form a septic poison, which is incurable. In the plant silphium[222] is found a small serpent, for the bite of which a remedy has been discovered in a small stone, which is taken out of the tomb of one of the ancient kings: this they drink dipped in wine. In some parts of Italy the bite of the gecko is found to be fatal. If one poisonous animal eats another, as, if a viper eats a scorpion, its bite is the most fatal of all. The saliva of a man is hostile to most of them. There is one small serpent, which some persons call hierus, which is avoided even by large serpents. It is a cubit long, and appears rough. Whatsoever it bites immediately becomes putrid in a circle round the wound. There is also a small serpent in India, the only one for which there is no remedy.