COMMENTARY. It seems to be the _Anthemis Pyrethrum_, although Sprengel is not quite satisfied. It was much used in stimulant embrocations. Dioscorides, Galen, Macer, and Serapion, and, in a word, all the authorities, recommend it strongly as a phlegmagogue for toothache. Dioscorides says further of it, that when rubbed in with oil, it is sudorific, being serviceable in chronic rigors, for parts which have lost their natural heat and are paralysed. (iii, 37.) Celsus also mentions it in a list of stimulants, to be applied externally for toothache (vi, 9), and ranks it among his caustics. (v, 8.) The Arabians treat of it at considerable length, but borrow much from Dioscorides. See in particular Avicenna (ii, 2, 547); Rhases (Cont. l. ult. i, 553); Averrhoes (Collig. v, 42.) They all in particular recommend it as a sialogogue in cases of toothache. We need scarcely remark that the pellitory (now called _Anacyclos Pyrethrum_) still holds its place in the Dispensatory as a sialogogue and masticatory. We see no good reason, therefore, for questioning its identity with the pyrethrum of the ancients, more especially as it still retains a place in the modern Greek Pharmacopœia. Πυρὸς, Triticum, _Wheat_, is heating in the first degree, but is intermediate between dry and humid substances. It is also somewhat glutinous and emplastic. * * * * * COMMENTARY. Without doubt it is the _Triticum æstivum_. We have treated largely of it among the dietetical articles in the First Book, and have also treated of the farina, leaven, and pollen of wheat separately. We need not, then, enlarge further upon this article at present. Πιτύα, Coagulum, _Rennet_; all sorts of it are possessed of acrid, attenuating, discutient, and decidedly desiccant powers. But that of hares is represented as curing epilepsy if drunk with vinegar, and as curing the female discharge, and proving a solvent of coagulated milk in the bowels, and of blood in like manner. Some say that it restrains spitting of blood from the chest. The rennet of a horse is described as proving serviceable in cæliac and dysenteric affections. That of the seal is said to have the properties of castor. * * * * *