Note 479 — ON THE PROGNOSTICS.

This is taken in part from the Coacæ Prænotiones, 493. Sprengel finds great fault with Hippocrates for laying it down as a rule, that in cases of gangrene a black color of the part is less dangerous than a livid. Dr. Ermerins, however, espouses the side of Hippocrates, and maintains that our author has acutely pointed out the difference between gangrene proving critical, and gangrene connected with weakness of the vital actions in the part. In the former case the part becomes perfectly black, whereas in the other it is livid. He mentions that he observed in an hospital at the same time a case of mortification from cold, and another of the same from want and congelation; that in the former the part was black, and the patient recovered; whilst in the other the arms were livid, and the patient soon died. (Specimen Hist. Med., p. 68.) Stephanus, by the way, gives nearly the same explanation of this remark. (p. 142.) Perhaps our author had in view the plague of Athens, in which the disease often terminated favorably in mortification of the fingers or toes. (Thucyd., ii., 49.)