MEDICORVM.

rely on no Physiognomic syllogism and, to use the words of Pliny, lead experiments through deaths. But let us return to the indications proposed by Galen. Three summa indicationes medicatoriæ supreme medicinal indications, says Galen in book 19 of the Method of Healing, chapter 13, "are taken from the disease itself, from the temperament of the body, and thirdly, from the air surrounding us." These three supreme indications also indicate and demonstrate three things that must be observed most carefully in the method of healing. For they indicate the Remedy: the quantity of the remedy: and the mode of use. For the disease, whether it be similar, organic, or common, indicates the remedy. But the temperament, both of the whole body and of a part, indicates how great the departure is from the pristine and natural habit: from which departure we understand in what way the quantity of the remedy is to be defined. To these two indications are recalled those indications which are taken from the position, seat, and consensus of the affected part, as well as those taken from the time