And indeed the great Hippocrates has long since taught, that this disease is owing to natural causes, and consequently, by no means divine.[131] For altho’ in his time, neither the inward parts of the animal body, nor the properties of the blood and humors, especially of the nervous fluid, were sufficiently known; yet by his great sagacity and experience, he has left us several useful observations, in relation both to the nature of the disease, and to its cure. For he has shewn, that it arises from too great a quantity of humors in the brain; and therefore that the best method of cure is to dry up, and lessen the quantity of this peccant matter; without having recourse to incantations and juggling tricks, so much in use in those days. [131] _See influence of the sun and moon, Chap. i. and ii._ But when in succeeding ages, the use of medicines became more common, a great number of remedies for this dreadful disease were invented, some of which indeed were too filthy and shocking: such as drinking the warm blood of a gladiator just slain; eating human or horse’s flesh, the testicles and penis of some animals, and other things of the same kind;[132] as if matters so repugnant to nature, could be contrary to such grievous defects of it. For so it often happens, that when a rational medicine is not to be found, any improper and rash one is attempted. But such experiments are to be abandoned to itinerant quacks, and credulous old women. Though even in our days our art is not sufficiently purged of this filth in these cases; seeing the dung of some birds, and the hoofs of quadrupeds are still ordered to be swallowed down by the sick. But whereas chemistry has furnished us with the means of extracting the salts, and other most active principles from bodies; to me it is matter of admiration, why physicians do not choose to order these principles to be taken pure into the body, rather than the coarse and fœculant substances, that contain them; which are always disagreeable, and sometimes hurtful also, to the stomach. But this most difficult distemper demands helps far superior to these; nor will any one method of cure answer in all cases, but the course must be altered according to the difference of constitution, &c. However, I will here propose those things, which have been found to be most generally serviceable. [132] _See Celsus, Lib. iii. Cap. xxiii. & Cael. Aurelian, Lib. i. Cap. 4._ Blood is to be taken away several times, according to the strength of the patient, in order to check its impetus. Vomits are to be administered now and then, but cathartics more frequently. It is particularly requisite to draw the redundant humor from the head, which is done by blisters; but better, by applying a caustic near the occiput, and making an issue, which is to be kept constantly running.