The Study Of The Biology Of Ferns By The Collodion Method

Excerpt from The Study of the Biology of Ferns by the Collodion Method: For Advanced and Collegiate Students The author was led to the preparation of this little work by the. success which attended his efforts in applying in his classes the collodion method to the preparation of the very delicate tissues of ferns, and especially to the infiltration of prothallia, without shrinkage. A class of nine students sectioned prothallia with ease and accuracy, making permanent microscopic preparations showing various stages of development of the sexual organs and the embryo, besides good series showing the development of the sporangia and spores. The first suggestion was the preparation of a simple laboratory guide giving directions for preparing the various tissues, accompanying this with a few illustrations, so far as possible made from preparations put up by the students in their regular work, and some descriptive matter which would be helpful to the student in mastering the detail of structure and development. It seemed desirable to the author that some features in the development not represented by specimens selected from the work of the students should be included. Accordingly, he was led to a protracted 7 Study of various phases of development, since it was desirable that all illustrations should be original, and that those of sections should be from preparations put up by this method. The work thus grew, since several questions arose which it seemed important to enquire into quite closely. Especially the question of the structure of the- annulus in the various orders of ferns, and the function of the different i.V . parts of the sporangium in the dispersion of the spores, called for study. 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.

Atkinson's groundbreaking work on the biology of ferns remains a cornerstone of botany and plant science. This revised edition includes updated illustrations and a new introduction by a leading fern expert. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

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