Castoreum,[390] taken in honied wine, is useful as a promoter of menstruation: in cases of hysterical suffocation, it is given to the patient to smell at with pitch and vinegar, or else it is made up into tablets and used as a pessary. For the purpose also of bringing away the afterbirth it is found a useful plan to employ castoreum with panax,[391] in four cyathi of wine; and in cases where the patient is suffering from cold, in doses of three oboli. If, however, a female in a state of pregnancy should happen to step over castoreum, or over the beaver itself, abortion, it is said, will be the sure result: so, too, if castoreum is only held over a pregnant woman’s head, there will be great danger of miscarriage. There is a very marvellous fact, too, that I find stated in reference to the torpedo:[392] if it is caught at the time that the moon is in Libra, and kept in the open air for three days, it will always facilitate parturition, as often as it is introduced into the apartment of a woman in labour. The sting, too, of the pastinaca,[393] attached to the navel, is generally thought to have the property of facilitating delivery: it must be taken, however, from the fish while alive; which done, the fish must be returned to the sea. I find it stated by some authorities that there is a substance called “ostraceum,” which is also spoken of as “onyx”[394] by others; that, used as a fumigation, it is wonderfully beneficial for suffocations of the uterus; that in smell it resembles castoreum, and is still more efficacious, if burnt with this last substance; and that in a calcined state it has the property of healing inveterate ulcers, and cancerous sores of a malignant nature. As to carbuncles and carcinomatous sores upon the secret parts of females, there is nothing more efficacious, it is said, than a female crab beaten up, just after full moon, with flower of salt[395] and applied with water. CHAP. 47.—METHODS OF REMOVING SUPERFLUOUS HAIR. DEPILATORIES.