Studies On The Germ Cells Of Aphids Classic Reprint
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Studies On The Germ Cells Of Aphids Classic Reprint
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Author : N. M. Stevens
language : en
Publisher:
Release Date : 2015-07-03
Studies On The Germ Cells Of Aphids Classic Reprint written by N. M. Stevens and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-07-03 with Science categories.
Excerpt from Studies on the Germ Cells of Aphids My previous report on the germ cells of aphids was based on a study of the parthenogenetic and winter eggs of Aphis rosae, the brown rose aphid, and of the spermatogenesis of Aphis oenotherae, found on the inflorescence of Oenothera biennis. During the past summer and autumn material from more than twenty species has been collected and examined. In some cases it has been possible to study all of the forms of one species, in other cases only the parthenogenetic eggs, only the winter eggs, or only the spermatogenesis. It has become evident in the course of the work that little dependence is to be placed on the present classification of aphids, and that a reclassification based on the cytology of the germ cells may be necessary. For example, it appears that at least three distinct species are usually included under the name Aphis rosae. No attempt will, therefore, be made in this paper to give the Latin names of the species studied, but they will be designated by the names of their host plants, and identified by brief description where it seems necessary. This comparative study was undertaken in the hope of throwing more light on the question of sex determination, and the descriptive part of the paper will be followed by a further discussion of the bearing of the facts recorded on that problem. Methods. The methods used were for the most part the same as in the previous work fixation with Gilson's "acetic alcohol with sublimate" (Lee, sixth edition, p. 65) and staining by Heidenhain's iron-haematoxylin method. Some material was fixed in Flemming's fluid, Hermann's platino aceto-osmic, and Gilson's mercuro-nitric, but such fixation brought out no new points in structure, and was, in general, less satisfactory than fixation with Gilson's acetic alcohol-sublimate formula. 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."
Studies On The Germ Cells Of Aphids
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Author : N. M. Stevens
language : en
Publisher: Wentworth Press
Release Date : 2019-03-04
Studies On The Germ Cells Of Aphids written by N. M. Stevens and has been published by Wentworth Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-03-04 with Science categories.
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.
Studies On The Germ Cells Of Aphids
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Author : Nettie Maria Stevens
language : en
Publisher:
Release Date : 1906
Studies On The Germ Cells Of Aphids written by Nettie Maria Stevens and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1906 with Aphididae categories.
Studies On The Germ Cells Of A
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Author : Nettie Maria 1861-1912 Stevens
language : en
Publisher: Wentworth Press
Release Date : 2016-08-29
Studies On The Germ Cells Of A written by Nettie Maria 1861-1912 Stevens and has been published by Wentworth Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-08-29 with History categories.
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.
Studies On The Germ Cells Of Aphids
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Author : N M Stevens
language : en
Publisher: Palala Press
Release Date : 2016-05-16
Studies On The Germ Cells Of Aphids written by N M Stevens and has been published by Palala Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-05-16 with categories.
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.
Studies On The Germ Cells Of Aphids
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Author : N M 1861-1912 Stevens
language : en
Publisher: Palala Press
Release Date : 2016-05-11
Studies On The Germ Cells Of Aphids written by N M 1861-1912 Stevens and has been published by Palala Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-05-11 with categories.
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.
Studies On The Germ Cell Of Aphids
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Author : Nettie Maria Stevens
language : en
Publisher: Palala Press
Release Date : 2016-04-30
Studies On The Germ Cell Of Aphids written by Nettie Maria Stevens and has been published by Palala Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-04-30 with categories.
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.
Studies On The Germ Cell Of Aphids
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Author : Nettie Maria 1861-1912 Stevens
language : en
Publisher: Palala Press
Release Date : 2016-04-24
Studies On The Germ Cell Of Aphids written by Nettie Maria 1861-1912 Stevens and has been published by Palala Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-04-24 with categories.
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.
Studies On The Germ Cell Of Aphids 1906
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Author : Nettie Maria Stevens
language : en
Publisher: Kessinger Publishing
Release Date : 2008-10-01
Studies On The Germ Cell Of Aphids 1906 written by Nettie Maria Stevens and has been published by Kessinger Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-10-01 with Law categories.
This scarce antiquarian book is a facsimile reprint of the original. Due to its age, it may contain imperfections such as marks, notations, marginalia and flawed pages. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions that are true to the original work.
History Of The Germ Cells And Early Embryology Of Certain Aphids
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Author : George W. Tannreuther
language : en
Publisher: Forgotten Books
Release Date : 2018-02-06
History Of The Germ Cells And Early Embryology Of Certain Aphids written by George W. Tannreuther and has been published by Forgotten Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-02-06 with Science categories.
Excerpt from History of the Germ Cells and Early Embryology of Certain Aphids: A Dissertation Submitted to the Faculty of the Ogden Graduate School of Science in Candidacy for the Degree of Doctor of Philosophy (Department of Zoology) With the importance of these facts in view, I propose to give the history of the aphids upon which the results of this paper are based, paying special attention to the phenomenon of spermatogenesis, ovogenesis and early 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.