The aristolochia that is the most esteemed, however, is that which comes from Pontus; but whatever the soil may happen to be, the more weighty it is, the better adapted it is for medicinal purposes. The aristolochia with a round root is recommended for the stings of serpents, and that with an oblong root * * * * But in this is centred its principal reputation; applied to the uterus with raw beef, as a pessary, immediately after conception, it will ensure the birth of male[733] issue, they say. The fishermen on the coasts of Campania give the round root the name of “poison of the earth;” and I myself have seen them pound it with lime, and throw it into the sea; immediately on which the fish flew towards it with surprising avidity, and being struck dead in an instant, floated upon the surface. The kind that is known as “polyrrhizos,”[734] is remarkably good, they say, for convulsions, contusions, and falls with violence, an infusion of the root being taken in water: the seed, too, is useful for pleurisy and affections of the sinews. It is considered, too, to be possessed of warming and strengthening properties, similar to those of satyrion,[735] in fact. CHAP. 55.—THE EMPLOYMENT OF THESE PLANTS FOR INJURIES INFLICTED BY SERPENTS. But it will be as well now to mention the various uses made of these plants, and the effects produced by them, beginning with that most dangerous of all evils that can befall us, stings inflicted by serpents. In such cases the plant britannica[736] effects a cure, and the same is the case with the root of all the varieties of panaces,[737] administered in wine. The flower, too, and seed of panaces chironion are taken in drink, or applied externally with wine and oil: cunila bubula,[738] too, is looked upon as particularly useful for this purpose, and the root of polemonia or philetæris is taken in doses of four drachmæ in unmixed wine. Teucria,[739] sideritis,[740] and scordotis,[741] are used in wine, plants particularly good, all of them, for injuries inflicted by snakes; the juice or leaves, or else a decoction of them, being taken in drink or applied to the wound. For a similar purpose also, the root of the greater centaury is taken, in doses of one drachma to three cyathi of white wine. Gentian, too, is particularly good for the stings of snakes, taken either fresh or dried, in doses of two drachmæ, mixed with rue and pepper in six cyathi of wine. The odour, too, of lysimachia[742] puts serpents to flight.