The disease called “tenesmus,” or in other words, a frequent and ineffectual desire to go to stool, is removed by drinking asses’ milk or cows’ milk. The various kinds of tapeworm[2352] are expelled by taking the ashes of deer’s horns in drink. The bones which we have spoken[2353] of as being found in the excrements of the wolf, worn attached to the arm, are curative of diseases of the colon, provided they have not been allowed to touch the ground. Polea, too, a substance already mentioned,[2354] is remarkably useful for this purpose, boiled in grape juice:[2355] the same too with swine’s dung, powdered and mixed with cummin, in a decoction of rue. The antler of a young stag, reduced to ashes and taken in wine, mixed with African snails, crushed with the shells on, is considered a very useful remedy. CHAP. 60. (15.)—REMEDIES FOR AFFECTIONS OF THE BLADDER, AND FOR URINARY CALCULI. Diseases of the bladder, and the torments attendant upon calculi, are treated with the urine of a wild boar, or the bladder of that animal taken as food; both of them being still more efficacious if they have been thoroughly soaked first. The bladder, when eaten, should be boiled first, and if the patient is a female, it should be a sow’s bladder. There are found in the liver of the wild boar certain small stones,[2356] or what in hardness resemble small stones, of a white hue, and resembling those found in the liver of the common swine: if these stones are pounded and taken in wine, they will expel calculi, it is said. So oppressed is the wild boar by the burden of his urine,[2357] that if he has not first voided it, he is unable to take to flight, and suffers himself to be taken as though he were enchained to the spot. This urine, they say, has a consuming effect upon urinary calculi. The kidneys of a hare, dried and taken in wine, act as an expellent upon calculi. We have already[2358] mentioned that in the gammon of the hog there are certain joint-bones; a decoction made from them is remarkably useful for urinary affections. The kidneys of an ass, dried and pounded, and administered in undiluted wine, are a cure for diseases of the bladder. The excrescences that grow on horses’ legs, taken for forty days in ordinary wine or honied wine, expel urinary calculi. The ashes, too, of a horse’s hoof, taken in wine or water, are considered highly useful for this purpose; and the same with the dung of a she-goat—if a wild goat, all the better—taken in honied wine: goats’ hair, too, is used, reduced to ashes.