The Journal Of Experimental Zoology 1944 Vol 26 Classic Reprint

Author : Ross G. Harrison
Publisher : Forgotten Books
Page : 572 pages
File Size : 41,6 Mb
Release : 2017-12-19
Category : Science
ISBN : 0484166824

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The Journal of Experimental Zoology, 1944, Vol. 26 (Classic Reprint) by Ross G. Harrison Pdf

Excerpt from The Journal of Experimental Zoology, 1944, Vol. 26 The rapid development of the new science of genetics has opened up many fertile fields Of investigation and it has also re vived interest in the problem Of inbreeding Which has been dor mant for many years. Charles Darwin '7 8) considered the subject Of inbreeding so important that not only did he collect all available data regarding it, but he himself carried on a series of inbreeding experiments that extended over a period of eleven years. Darwin's experiments on plants were followed by those of Crampe of Huth and of Retzima - Bos '94) on various species of mammals. The conclusions reached by each Of these investigators can well be stated in the words Of Darwin The consequences of close interbreeding carried on for too long a time, are, as is generally believed, loss Of size, con stitutional vigor and fertility, sometimes accompanied by a tendency to malformation. Darwin adds, furthermore: That any evil directly follows from the closest interbreeding has been denied by many persons, but rarely by any practical breeder and never, as far as I know, by one who has largely bred ani mals which propagate their kind quickly. 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.

Author : Ross G. Harrison
Publisher : Forgotten Books
Page : 508 pages
File Size : 41,9 Mb
Release : 2019-01-16
Category : Science
ISBN : 0267973756

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The Journal of Experimental Zoology, 1919, Vol. 28 (Classic Reprint) by Ross G. Harrison Pdf

Excerpt from The Journal of Experimental Zoology, 1919, Vol. 28 Fig 1 The nitrogen cycle (from Bayliss). The accessory lines and circles in are my additions based on evidence in this paper. 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.

Author : Ross G. Harrison
Publisher : Forgotten Books
Page : 616 pages
File Size : 54,7 Mb
Release : 2018-02-02
Category : Science
ISBN : 0267625367

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The Journal of Experimental Zoology, 1918, Vol. 24 (Classic Reprint) by Ross G. Harrison Pdf

Excerpt from The Journal of Experimental Zoology, 1918, Vol. 24 No attempt to review or abstract from the literature the facts relating to dedifferentiation in metazoa will be made. This has been done in an excellent summary and review by Schultz Schultz formulated the observations on metazoa in terms of the hypothesis that all phenomena of form regulation are somehow related to and a result of the reversal of differentiation or de differentiation. In other words regeneration is a result of the differentiation of dedifferentiated cells (see also Child. 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.

Author : Ross G. Harrison
Publisher : Forgotten Books
Page : 522 pages
File Size : 48,9 Mb
Release : 2018-02-06
Category : Science
ISBN : 0267977107

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The Journal of Experimental Zoology, 1921, Vol. 33 (Classic Reprint) by Ross G. Harrison Pdf

Excerpt from The Journal of Experimental Zoology, 1921, Vol. 33 The following-experiments were carried out at the University of Chicago during the years 1917 to 1919. I am deeply indebted to Professor Lillie for his invaluable suggestions and criticisms during the course of the work and for his generosity in Supplying me with numerous materials used in the experiments. I also wish to express my thanks to Dr. L. H. Hyman for revising the manuscript. 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.

Author : Ross G. Harrison
Publisher : Forgotten Books
Page : 626 pages
File Size : 43,5 Mb
Release : 2018-02-08
Category : Science
ISBN : 0656117923

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The Journal of Experimental Zoology, 1943, Vol. 25 (Classic Reprint) by Ross G. Harrison Pdf

Excerpt from The Journal of Experimental Zoology, 1943, Vol. 25 This study has been carried a little further and included other birds with abnormal sex behavior, but normal structure. That is, to complete the more female end Of the series, we have studied several apparently normal hens that tread other hens. Of these, 1422 was sent from West Virginia by Professor Atwood as a pos sible hermaphrodite but has behaved normally 'in Maine. K134 and m4o8 were two such birds reared at the Station plant and finally killed to study their anatomy and histology. TO complete the more male end Of the series we have studied two guinea-chicken hybrids, one raised on the Maine poultry plant and the other sent in for examination from the country. Their gonads appeared to be testes, but their behavior was indifferent. 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.

Author : Ross G. Harrison
Publisher : Forgotten Books
Page : 610 pages
File Size : 41,6 Mb
Release : 2018-02-04
Category : Science
ISBN : 0483090085

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The Journal of Experimental Zoology, 1936, Vol. 20 (Classic Reprint) by Ross G. Harrison Pdf

Excerpt from The Journal of Experimental Zoology, 1936, Vol. 20 In a recent paper1 I reported an attempt to obtain a modified clone of Hydra Viridis by the continued selection of variates dif fering in the number of tentacles. In that experiment a clone was bred from a single wild polyp and two groups of its descend ants, each composed of 25 lines, were selected for variations in tentacle number in opposite directions from the mean of the clone. Selection was continued for several generations, then the number of tentacles of all buds produced by the last selected gen eration of the 50 lines was recorded and the averages of the two groups were compared. A slight difference, in the direction of selection, was found in the averages of the earlier buds of the two groups but this difference did not persist in the buds pro duced later by the same parents; regression was complete in a single generation. 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.

Author : William E. Castle
Publisher : Unknown
Page : 578 pages
File Size : 50,8 Mb
Release : 2018-02-13
Category : Science
ISBN : 0332928020

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The Journal of Experimental Zoology, 1912, Vol. 12 (Classic Reprint) by William E. Castle Pdf

Author : Ross Granville Harrison,John Spangler Nicholas,William Keith Brooks
Publisher : Wentworth Press
Page : 534 pages
File Size : 54,5 Mb
Release : 2019-03-24
Category : History
ISBN : 1011113899

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The Journal Of Experimental Zoology; by Ross Granville Harrison,John Spangler Nicholas,William Keith Brooks Pdf

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.

Author : Ross G. Harrison
Publisher : Forgotten Books
Page : 550 pages
File Size : 52,9 Mb
Release : 2018-02-11
Category : Science
ISBN : 0656351438

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The Journal of Experimental Zoology, 1910, Vol. 8 (Classic Reprint) by Ross G. Harrison Pdf

Excerpt from The Journal of Experimental Zoology, 1910, Vol. 8 The species on which my work was done was Stylotella helio phila Wilson, a monaxonid demosponge belonging to the order Helichondrina. This species will be described in a monograph on the Sponges of Beaufort, N. C., soon to be published by Dr. H. V. Wilson, and I am indebted to Dr. Wilson for having called my attention to this sponge, which in all respects was extremely satisfactory for the work I had planned. My investigations were carried out in June and July at the Beaufort Laboratory of the United States Bureau of Fisheries, and I am under obligations to Commissioner G. M. Bowers for the privilege of working at this laboratory and to its director, Mr. H. D. Aller, for generous pro vision during my stay there. 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.

Author : Ross G. Harrison
Publisher : Forgotten Books
Page : 564 pages
File Size : 43,9 Mb
Release : 2017-12-16
Category : Science
ISBN : 0332995860

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The Journal of Experimental Zoology, 1931, Vol. 17 (Classic Reprint) by Ross G. Harrison Pdf

Excerpt from The Journal of Experimental Zoology, 1931, Vol. 17 T. H. Morgan. Two sex-linked lethal factors in Drosophila and their influence on the sex-ratio. Seven figures. Jacques loeb. Cluster formation of Spermatozoa caused by Specific substances from eggs. 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.

Author : William K. Brooks
Publisher : Forgotten Books
Page : 638 pages
File Size : 44,7 Mb
Release : 2017-12-26
Category : Science
ISBN : 0484870955

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The Journal of Experimental Zoölogy, Vol. 1 by William K. Brooks Pdf

Excerpt from The Journal of Experimental Zoology, Vol. 1: The Journal of Experimental Zoology, Baltimore The egg of Dentalium, like that of Cerebratulus, possesses certain features by means of which the axis may be determined in the living egg from the moment of its release from the ovary. The egg is more or less deeply pigmented, perfectly opaque, and of a color that varies in diflerent individuals from light olivaceous to reddish brown or almost brick red. When first set free the egg is somewhat irregular, but quickly becomes more rounded. It is then seen to be very considerably flattened, so as often to be almost biscuit-shaped, one side being always more flattened than the other, and often more or less irregular in contour. Viewed by reflected light the central region of each of the flat tened sides is seen to be occupied by a very distinct, though vaguely bounded, white area, nearly or quite free from pigment (fig. 1) these areas, as shown by the subsequent development, correspond with the two poles of the egg, and the more flattened side, which. 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.

Author : William E. Castle
Publisher : Forgotten Books
Page : 520 pages
File Size : 40,8 Mb
Release : 2018-01-24
Category : Science
ISBN : 0483806013

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The Journal of Experimental Zoölogy, Vol. 36 by William E. Castle Pdf

Excerpt from The Journal of Experimental Zoölogy, Vol. 36: July-November, 1922 By investigation of the regeneration of pieces of the same length from different regions Of the body Of animals of the same size, Child Showed that there is a definite gradation in head frequency in such pieces, decreasing from the head posteriorly to the region at which fission usually occurs, indicating there the posterior limit of the first zooid. Then it rises abruptly to decrease again toward the end Of the second zooid (child, '11 a, '11 b). 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.

Author : Wistar Institute Of Anatomy And Biology
Publisher : Forgotten Books
Page : 560 pages
File Size : 49,6 Mb
Release : 2018-02
Category : Science
ISBN : 0267472048

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The Journal of Experimental Zoölogy, 1918-1919, Vol. 27 (Classic Reprint) by Wistar Institute Of Anatomy And Biology Pdf

Excerpt from The Journal of Experimental Zoölogy, 1918-1919, Vol. 27 Showing, by generation groups, the sex ratios in the inbred and in the half-inbred letters of the A series (male line) 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.

Author : Ross G. Harrison
Publisher : Forgotten Books
Page : 598 pages
File Size : 51,6 Mb
Release : 2018-02-13
Category : Science
ISBN : 0332640906

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The Journal of Experimental Zoölogy, 1911, Vol. 10 (Classic Reprint) by Ross G. Harrison Pdf

Excerpt from The Journal of Experimental Zoology, 1911, Vol. 10 If the quiescent head from a freshly killed Fundulus is examined in water, no motion is observable about the olfactory apertures. 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.

Author : Thomas Hunt Morgan
Publisher : Forgotten Books
Page : 476 pages
File Size : 46,7 Mb
Release : 2017-10-30
Category : Science
ISBN : 0265975387

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Experimental Zoology (Classic Reprint) by Thomas Hunt Morgan Pdf

Excerpt from Experimental Zoology Physiology has from the beginning made use of the method of experiment, and with notable success. Morphology has, up to the present time, followed mainly the historical and descriptive methods, although striking exceptions could be cited. While the historical study of zoology must always remain a legitimate field for activity, as human history has been a time-honored study, yet there can be little doubt that the more promising and searching method of zoological study in the future will be found ln experiment. 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.