Physiological Chemistry, Vol. 3 (Classic Reprint)
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| Hersteller: | Forgotten Books (Lehmann, Carl Gotthelf) |
| Stand: | 2015-08-04 03:50:33 |
Produktbeschreibung
Excerpt from Physiological Chemistry, Vol. 3 The theory of the chemical nature of the animal tissues is a department of physiological chemistry which as yet has been very little cultivated; and the reasons of this unsatisfactory state of our knowledge are too obvious to require any detailed exposition. We will, therefore, simply observe, that the most important obstacle to the chemical investigation of the tissues is, that their elements are too intimately combined or associated with one another to admit of their being prepared for chemical analysis by a previous mechanical separation. This separation of the various elementary tissues which are deposited among, penetrate between, and envelope one another, is rendered the more difficult by the circumstance that with scarcely an exception they are equally insoluble in the ordinary indifferent menstrua employed by chemists. If we have recourse to the stronger or more energetic solvents, as for instance, acids or alkalies, we have seldom any assurance that the dissolved substance is the (otherwise) unchanged histological element, and that the portion remaining undissolved is in reality a simple chemically pure material; indeed, in the majority of cases, there cannot be a doubt that the chemical constitution of the tissue on which we arc experimenting is entirely changed by such reagents. Various means have been attempted with the view of submitting the animal tissues to chemical investigation. 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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