The Toxicity to Fungi of Various Oils and Salts, Particularly Those Used in Wood Preservation (Classic Reprint)
| Preis: | 10.95 EUR* (inkl. MWST zzgl. Versand - Preis kann jetzt höher sein!) |
| Versand: | 0.00 EUR Versandkostenfrei innerhalb von Deutschland |
| Partner: | buecher.de |
| Hersteller: | Forgotten Books (Humphrey, C. J.) |
| Stand: | 2015-08-04 03:50:33 |
Produktbeschreibung
Excerpt from The Toxicity to Fungi of Various Oils and Salts, Particularly Those Used in Wood Preservation These preservatives have in a general way proved to be fairly good, but recently further efforts have been made to supplement them, or perhaps to substitute for them under certain conditions other substances which may be more applicable to certain requirements. In addition to the toxicity of a preservative toward wood-destroying organisms, its value to the trade will depend largely upon its varied physical and chemical properties, as well as upon certain economic considerations involved. The present publication, however, deals only with the toxic properties. Considerable literature on the toxic effect upon plant and animal life of various chemical substances, both inorganic and organic, has accumulated, but relatively little work has been done with wood-destroying fungi, and any attempt to draw analogies would be misleading. Even among fungi the toxic concentration of a given preservative will vary, depending upon the organism, the concentration of the preservative, and the growth conditions, such as the composition of media and the temperature. In order to call attention to the fundamental character of certain of these variations and to illustrate the points involved, a brief survey of some of the work of other investigators is hero presented before the results of our own work are discussed. No attempt has been made to review all the literature on this extensive topic, and only a few references which serve to illustrate the points the writers desire to emphasize are included. Historical. Stimulation by Toxic Substances. Many investigators have established the fact that certain substances that are poisonous in higher concentration exert only a stimulating effect in extreme dilution. For many years the fluorin compounds have been known to have this stimulating effect upon fermentation. One (22) and Raulin (24) have found similar favorable influences exited by lithium nitrate and sodium fluorid upon algæ and by mercuric chlorid and copper sulphate upon fungi. Fred (9), in his studies on nitrogen fixation, denitrification, ammonification, and putrefactive processes in soils, due to certain bacteria and yeasts, concludes that the yield is in proportion to the toxic stimuli. Likewise, Clark (3, p. 400), in his work on the toxic effect of many acids and salts upon fungi, found that many deleterious agents which at certain concentrations retard germination or early growth afterwards cause a great acceleration of mycelial development. 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.
* Preis kann jetzt höher sein. Den aktuellen Stand und Informationen zu den Versandkosten finden sie auf der Homepage unseres Partners.
Folgende Produkte könnten dir ebenso gefallen
