After giving the above accurate description of the leprosy, Gordon, in a subsequent page,[178] earnestly states, “No one ought to be adjudged as a leper unless there manifestly appear a corruption of the figure (_corruptio figurae_), or that state which is indicated by his _signa infallibilia_. And I repeat to you this (he adds), as often as I have occasion to mention the _corruptio figurae_, because, as it appears to me, lepers are at the present day very injudiciously adjudged. Whoever, therefore, has ears, let him attend to this, if he will.” The other medical author whom I particularised for quotation, Guy de Chauliac, practised first at Lyons, and afterwards at Avignon. He was one of the most celebrated surgeons in the fourteenth century,[179] and was successively medical attendant upon Popes Clement VI. and Urban V.[180] From the notice which he gives of the Black Death Pestilence of 1363, it would seem that he was then stationed at Avignon, and engaged in the Composition of his “Inventarium sive Collectorium Partis Chirurgicalis Medicinae.” In the long disquisition on lepra, contained in the 6th treatise of this work,[181] De Chauliac, after stating the usual subdivision of the disease into four varieties or species (Elephantia, Leonina, Tyria, Alopecia), goes on to describe the common signs of all the varieties of leprosy, (signa communia _Omnium_ specierum Lepræ). The signs or symptoms indicating the actual presence of the disease are, he says, some unequivocal, others equivocal (_quædam univoca, quædam equivoca_). Among the former set (_signa univoca_) he ranges the six following symptoms:—“(1.) rotundity of the ears and eyes; (2.) thickening and tuberosity of the eyebrows, with falling off of their hair; (3.) dilatation and disfiguration of the nostrils externally, with stricture of them within, and fœtidity of the lips; (4.) voice raucous and nasal; (5.) fœtidity of the breath, and of the whole person; (6.) fixed and horrible satyr-like aspect.” I question if any of our modern nosologists, or any recent writers on cutaneous diseases, have proposed a more correct definition, or accurate and concise diagnosis of the _Elephantiasis Græcorum_ than is presented in the above enumeration of its pathognomonic symptoms by the old French surgeon.