Alsaharavius describes four varieties of _lepra_, namely, the leonina, elephantia, serpentina, and vulpina. The disease, he says, may be contracted, 1st, by an hereditary taint; 2d, by the use of corrupted food, such as the flesh of buck-goats, cows, &c.; 3d, by contagion, through the medium of the respiration. He describes all the gradations of the disease with greater minuteness than any other ancient author. In its last stage, he says, the nose falls in, the hairs drop off, the voice is lost, ulcers break out on the skin, the extremities mortify and fall away, and the breath is fetid. His treatment varies according to the circumstances of the case, but, upon the whole, it is scarcely at all different from that of the others. By the name of elephantia he also describes the _swelled leg_, which he pronounces to be a very intractable disease. He directs us, however, to have recourse to bleeding, melanogogues, abstinence from gross food, emetics, and various external applications of a stimulant nature, among which he mentions burying the leg in hot sand. The translator of Rhases also applies the term _lepra_ to the elephantiasis of the Greeks. The colour of the eye, he says, is changed, the voice becomes rough, the face is swelled, like a bladder, and red with nodes, the hairs fall off, and the extremities at last become swelled and ulcerated. There is nothing peculiar in his treatment. He describes, likewise, the _swelled leg_ by the name of elephantia or elephas. He says that, when tubercles arise on it, it is utterly incurable; but that when simply enlarged, it may be remedied by bleeding in the arm, cupping, emetics, attenuant food, and the like. In his ‘Continens,’ he calls the lepra (elephantiasis) hereditary and contagious. He says, it is a general cancer, arising from black bile. For the _swelled leg_ he recommends, as in his other work, bloodletting and emetics, with stimulant applications, containing pearlashes, sulphur, &c., and also tight bandages. Such is the history of elephantiasis given by ancient authors. The earlier of our modern writers on medicine, describe elephantiasis as a species of lepra, of which they enumerate four varieties, namely, elephantia, leonina, alopecia, and tyria. This arrangement is evidently taken from Alsaharavius. Such is the account which Platiarius gives of these diseases. In like manner, the Pseudo-Macer ranks elephantiasis with lepra: “Est lepræ species elephantiasisque vocatur,” &c. Upon this passage Cornarius makes the following annotation: “Vulgus medicorum Arabas in hoc secuti lepram cum elephantiasi confundunt. Immo lepram pro elephantiasi accipiunt.”