The Yeasts (Classic Reprint)

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Excerpt from The YeastsThe introduction and perfection of pure cultures permitted the exact morphological studies of the yeasts. This was the work of Hansen, who is the true founder of this study, and whose name marks a second step in the history of the yeasts. Through his careful investigations for a period of 30 years, this mycologist perfected methods which were introduced by Pasteur for culturing and isolat ing the yeasts. He succeeded in inoculating cultures with a single cell and separating one species from another. By careful studies on the morphological and physiological properties of yeasts, Hansen found the characteristics which allowed the differentiation of one species from another. He has thus been able to characterize a large number of species the majority of which are known. Hansen is responsible for our knowledge of the life cycle and the systematic relationships of the yeasts. In recent years, he has preposed a classification which has been universally accepted.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.