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Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: DEPARTMENT OF SUMMARIES TO BE DEVOTED TO DIGESTS OF PROGRESS IN BIOLOGY While the Transactions will continue to be primarily a Journal of research in mier-- oiology, it is recognized that the field has become so broad as to preclude the possibihf of freauent articles in any one of the departments of special interest. Because of this it will be the policy to present, from time to time, supplementary digests of the progress being made in the various fields of micro-oioloiiy It is also proposed to introduce similar summaries of the progress made in some departments not represented in our articles of research. This is done with the feeling that such reviews will Increase the permanent alue of the Transactions to all who may not have access to a large list of technical biological journals, nor the time to make the survey for themselves. PROGRESS IN EVOLUTIONARY THOUGHT SOME LATTER-DAY ASPECTS OF DARWINISM. By J. F. Abbott. A lecture given before the faculty and students of Washington University Jan. 9, 1912. If any one thing can be taken as a symbol of the present time, I fancy the most appropriate would be the hammer. Not only is the hammer the symbol of constructive industry so characteristic of our age, but it may also typify the spirit of iconoclasm, which is equally, if not more strikingly, characteristic. From the muckraking of a popular magazine to the calm, deliberate, destructive criticism of a system of philosophy, now is essentially a time of making over. The present generation has no reverence for traditions of the past unless they be in harmony with the point of view of the present. It is by some considered a sort of poetic justice that the image of the greatest iconoclast of modern times, in effect if not in pur- pose, - -Charles Darwin, ?shou.

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 was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.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.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. 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.

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1897 edition. Excerpt: ...instances, the fibrovascular strands, alternating with those destined for the cotyledons (I:5), enter the first internode, and, by division, give rise to the vascular system of the stem. The transition-region extends, then, from the upper portion of the root proper to the cotyledons, and includes the whole of the hypocotyl above the collet, the tigelle'. Silene armeria. The diameter of the tegumentary cylinder of the root is very variable. Near the tip, it consists of but four layers, epiderm, exoderm, one-layered cortical parenchyma, and endoderm. The transition in size takes place only toward the central cylinder, the exoderm alone equalling the cortical parenchyma and the endoderm in extent. In the vicinity of the collet the number of rows in the parenchyma increases to two or three, and the outer of these dominates the cylinder, so that decrease, as normally, takes place in two opposite directions, toward both epiderm and exoderm. The cells are now nearly orbicular, and the tissue of the entire cylinder is characterized by very numerous and regular intercellular spaces, which are entirely lacking in the root. The cells of the endoderm are more or less elongated transversely, so that, ultimately, they become prismatic. The pericycle is simple and contains 25 to 30 polyedric cells. As in Dianthu s sinensis, it persists up to the cotyledons, increasing the number of its cells to correspond to the expansion of the central cylinder: in face of the phloem strands, the pericyclar cells sometimes diminish in size, but apparently never wholly disappear. The composition and arrangement of xylem and phloem are very similar to that already indicated for Diantkus sinensis. The xylem is diarch, and consists usually of nine elements, four in...

Excerpt from Transactions of the American Microscopical Society, Vol. 20: Twenty-First Annual Meeting Held at Syracuse, New York, August 30, 31 and September 1, 1898 He was a man whose life was spent in natures great laboratory, and if he had been spared to address us on this occasion, we would have listened to an important chapter from nature study. He taught during his lifetime the existence of higher and nobler ideals. Personally, I am much indebted to the living influence of his forceful character and, if perchance, in my feebleness in trying to do as he would have wished, I shall be so fortunate as to kindle anew or deepen your interest in pure or applied biology, cherish the thought as a reflected message from him who would, had God willed, instructed us this hour. Under the trying circumstances, I had some difficulty in selecting a topic for this formal address. The little time since this unexpected duty fell to me has been so overcrowded with other and more imperative duties, that it was impossible to carry out a new, or even complete, any line of investigation, the results of which could be used on this occasion. Likewise it was too brief for preparing a discussion on any of the broader and more fundamental problems centered in any of the sciences represented in our society. It so happened, however, that following this call to duty, I had occasion to adjust a course of instruction in comparative bacteriology, to meet the needs of students of human medicine, and, at the same time, to fill it full for those who were seeking knowledge in comparative pathology. In working out this actual and seemingly difficult problem, the subject as announced suggested itself and in its somewhat popular consideration I ask your indulgence. 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.

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 was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.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.As a reproduction of a historical artifact, this work may contain missing or blurred pages, poor pictures, errant marks, etc. 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.