Polypodium, Polypody, is possessed of considerably desiccative powers without pungency. When drunk it purges downwards.
Commentary. Dioscorides says of the root of the π. (Polypodium vulgare), that it is purgative, and is given to evacuate phlegm and bile; that it makes a good application to sprains and fissures in the hands. (iv, 185.) Galen and the other Greek authorities merely state its properties in general terms, like our author, with the exception of Ruffus, who treats of it more elaborately. He says it evacuates phlegm, bile, and water; that it should be taken in mulse or water before a meal, when it will purge gently, and thus prove an excellent laxative, especially to children; but that in disease it is not a purgative possessed of much efficacy. (Opera, 14.) The Arabians, and especially Mesue, seem to have attached more importance to it. See Mesue (De Simpl. 5); Serapion (c. 248); Avicenna (ii, 2, 535); Averrhoes (Collig. v, 42); Ebn Baithar (i, 227.) Mesue recommends it in joint diseases, colic, hardness of the spleen, fevers connected with black bile, and fissures of the hands. The polypody retained its place in the Dispensatory with its ancient characters as late as the time of Quincy (137), and even in the age of Lewis it had not been wholly rejected. (ii, 244.) There seems no good ground for questioning its efficacy as a gentle laxative. See Gray (Suppl. to Pharmacop. 13.)
Πομφόλυξ,
Pompholyx, is desiccative without pungency, so that it is useful for carcinomatous and other ill-conditioned ulcers. It is also an ingredient in ophthalmic remedies.
Commentary. What this substance was is well stated by a comparatively recent writer on the Materia Medica. Dr. Lewis, treating of zinc, says, “Moderately pure white flowers sublimed from it in the brass or other furnaces, wherein zinc, or its ores are melted with other metals, were formerly kept in the shops and distinguished by the names of pompholix and nihil album.” (Mat. Med. ii, 485.) A still later authority on the Pharmacopœia describes it thus: “Pompholix Nihil album. Collected in the smelting furnaces wherein zinc ores or brass are melted; used in ointments for tutty.” Gray (Suppl. &c. 234.) It is also distinctly described by Geoffroy (Treatise on Fossil, &c. Subst. 185), and by Quincy (201.) The latter writes as if he had been familiar with this article; but it appears singular that the former says that in his time (that is to say, about 150 years ago) it was unknown in the shops. For the ancient authorities on it, see in particular Pliny (H. N. xxiv, 33), and Dioscorides (v, 85.) The latter calls it styptic, cooling, and to a certain extent escharotic. Galen recommends it in carcinomatous and all ill-conditioned ulcers, for those about the parts of generation and anus, and for ocular collyria. (De Simpl. ix.) The Arabians treat of it under the head of Tutia. See in particular Serapion (c. 422); Avicenna (ii, 2, 695); Averrhoes (Collig. v, 43); Ebn Baithar (i, 217.) Hardly one of them does anything more than copy the description of it given by Dioscorides and Galen, only comprehending under one name what the Greeks had delivered regarding pompholyx and spodium separately.
Πορφύραι,
Purpuræ, when burnt are possessed of the same powers as shells. The part which serves as a cover to them when boiled in oil, strengthens hairs that are falling out. When drunk with vinegar, they cure swelling of the spleen. As a fumigation, they rouse in cases of uterine suffocation, and expel the secundines.
Commentary. The shell-fishes which supply the purple dye. It is got from various fishes, but more especially the Helix ianthina, Murex brandaris and trunculus. For an account of them, see particularly Aristot. (Hist. Animal. v, 14), and Pliny (H. N. ix, 60.) Our author borrows from Dioscorides (iii, 4), and Galen (De Simpl. xi.) We have not been able to detect this article in the works of the Arabian authorities.
Ποταμογείτων,
Potamogiton, Pondweed, is cooling and astringent, like Polygonum, being possessed of similar powers to it.