Lectures on Pharmacology for Practitioners and Students, Vol. 2 (Classic Reprint)
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| Partner: | buecher.de |
| Hersteller: | Forgotten Books (Binz, Carl) |
| Stand: | 2015-08-04 03:50:33 |
Produktbeschreibung
Excerpt from Lectures on Pharmacology for Practitioners and Students, Vol. 2 We now pass on to the consideration of another group of remedies, namely, those containing tannic acid. Acidum tannicum, tannin, occurs as a white or yellowish amorphous powder, or as thin, glistening, almost colourless scales. It is soluble in an equal weight of water, and in two parts of alcohol, but insoluble in pure ether. The solutions have an acid reaction, an astringent taste, and form a bluish-black precipitate with the persalts of iron. Tannic acid is obtained from oak galls, gallæ, especially from those found on Quercus lusitanica, var. infectoria, a shrub or small tree growing in Asia Minor. Galls are round excrescences on the young shoots, caused by the puncture of the gall-insect, Cynips gallæ-tinctoriæ. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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