The bird also, which is called the ibis,[1774] a native of the same country of Egypt, has shewn us some things of a similar nature. By means of its hooked beak, it laves the body through that part, by which it is especially necessary for health that the residuous food should be discharged. Nor, indeed, are these the only inventions which have been borrowed from animals, to prove of use to man. The power of the herb dittany, in extracting arrows, was first disclosed to us by stags that had been struck by that weapon; the weapon being discharged on their feeding upon this plant.[1775] The same animals, too, when they happen to have been wounded by the phalangium, a species of spider, or by any insect of a similar nature, cure themselves by eating crabs. One of the very best remedies for the bite of the serpent, is the plant[1776] with which lizards treat their wounds when injured in fighting with each other. The swallow has shown us that the chelidonia[1777] is very serviceable to the sight, by the fact of its employing it for the cure of its young, when their eyes are affected. The tortoise recruits its powers of effectually resisting serpents, by eating the plant which is known as cunile bubula;[1778] and the weasel feeds on rue, when it fights with the serpent in the pursuit of mice.[1779] The stork cures itself of its diseases with wild marjoram, and the wild boar with ivy, as also by eating crabs, and more particularly those that have been thrown up by the sea.[1780] The snake, when the membrane which covers its body has been contracted by the cold of winter, throws it off in the spring by the aid of the juices of fennel,[1781] and thus becomes sleek and youthful in appearance. First of all, it disengages the head, and it then takes no less than a day and a night in working itself out, and divesting itself of the membrane in which it has been enclosed. The same animal, too, on finding its sight weakened during its winter retreat, anoints and refreshes its eyes by rubbing itself on the plant called fennel or marathrum; but if any of the scales are slow in coming off,[1782] it rubs itself against the thorns of the juniper. The dragon relieves the nausea which affects it in spring, with the juices of the lettuce.[1783] The barbarous nations go to hunt the panther, provided with meat that has been rubbed with aconite, which is a poison.[1784] Immediately on eating it, compression of the throat overtakes them, from which circumstance it is, that the plant has received the name of pardalianches.[1785] The animal, however, has found an antidote against this poison in human excrements; besides which, it is so eager to get at them, that the shepherds purposely suspend them in a vessel, placed so high, that the animal cannot reach them even by leaping, when it endeavours to get at them; accordingly, it continues to leap until it has quite exhausted itself, and at last expires: otherwise, it is