[133]. See Unguent. Hydrarg.
[134]. Treatise on the Materia Medica, vol. I. p. 191.
[135]. Medical Literature, Edit. 2. (Pharmacology,) p. 454.
[136]. System of Mat. Med. vol. I. p. 132.
[137]. A system of Materia Medica and Pharmacy, vol. 1. p. 131.
[138]. Narcotics, from νάρκη Torpedo; an animal which has the power of stupefying any thing that it touches.
[139]. During the severe campaigns of the late war, the Surgeons of the French army were in the practice of administering Opium and Cayenne Pepper to the soldiers who were exhausted by fatigue.
[140]. Treatise on Nervous Diseases, vol. 1. p. 221.
[141]. Bitterness in vegetables has been supposed to reside in a peculiar proximate principle, which has been accordingly named the Bitter Principle. Such an opinion, however, does not appear to rest on sufficient evidence; on the contrary, experiment has shewn that it is very generally connected with the extractive matter of the plant, as it is obtained equally by the action of water and alcohol; it is not volatile, nor are its energies impaired by decoction.
[142]. Thus Sir H. Davy, in comparing the composition of the soluble products afforded by different crops from the same grass, found in every trial, the largest quantity of truly nutritive matter in the crop cut when the seed was ripe and the least bitter extractive, and saline matter; while in the autumnal crops these relations were found inverted. Elem. of Agricult. Chem.