Inhaltsangabe
Excerpt from The Law of Inheritance: Or the Philosophy of Breeding
The ovum takes its origin from within the stroma, or the cavity of the ovaries, which answer analogically to the secret ing process of the testicle. In many of the lower animals the testes and ovaries bear a close resemblance to each other, and the same holds good in the early or embryotic condition of the generative apparatus of man. In some of the lower grades of animals, as generally in the articulates and mol lusks, the ovaries have a glandular character, but in the verti brates the ova are evolved in the midst of a solid fibrous tissue or stroma.
The likeness between the spermatozoa and the ova is again indicated by the fact that they both appear to be the product of cell-action, with development having taken place after the dehiscence of the cell from its companion cells. We thus have in the sperm the mother-cell containing the nuclei which are formed into ciliated cells, and which are to develop a vitality sufficient to support the motion necessary to them for the fulfilment of their uses. In the ovum we recognize an advanced development, in which the cell containing its nucleus is the essence; the nucleus in both being the essential part for the exercise of the complete function of either, - the pro duction of the individual life.
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.
Die Inhaltsangabe kann sich auf eine andere Ausgabe dieses Titels beziehen.
Reseña del editor
Excerpt from The Law of Inheritance: Or the Philosophy of Breeding
The ovum takes its origin from within the stroma, or the cavity of the ovaries, which answer analogically to the secret ing process of the testicle. In many of the lower animals the testes and ovaries bear a close resemblance to each other, and the same holds good in the early or embryotic condition of the generative apparatus of man. In some of the lower grades of animals, as generally in the articulates and mol lusks, the ovaries have a glandular character, but in the verti brates the ova are evolved in the midst of a solid fibrous tissue or stroma.
The likeness between the spermatozoa and the ova is again indicated by the fact that they both appear to be the product of cell-action, with development having taken place after the dehiscence of the cell from its companion cells. We thus have in the sperm the mother-cell containing the nuclei which are formed into ciliated cells, and which are to develop a vitality sufficient to support the motion necessary to them for the fulfilment of their uses. In the ovum we recognize an advanced development, in which the cell containing its nucleus is the essence; the nucleus in both being the essential part for the exercise of the complete function of either, - the pro duction of the individual life.
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.
Reseña del editor
Excerpt from The Law of Inheritance: Or the Philosophy of Breeding
It is now nearly three years since I made my first attempt to write a work on the breeding of domestic animals. I had collected a considerable mass of information, chiefly so-called facts, and it seemed an easy matter to bring these into shape for the illustration of principles which could be enunciated as laws. I soon, however, realized the difficulty of using this material to produce an harmonious result, as the grouping was not only arbitrary, but the laws which they were intended to illustrate were but empirical formulæ, whose mutual connections could not be shown. I therefore determined to seek, through further study, a solution for my difficulties; and I may here say that my realization of the importance of force as fashioning the phenomena of vitality came entirely from a series of inductions. The facts were grouped under laws which seemed to formulate the conditions under which they occurred, and these laws, in turn considered as unities, pointed unmistakably to a superior law, which in its turn influenced their occurrence, - the law of persistence of force. This brief paper is not presented in order to prove a theory, but as an outgrowth arising from the supposed recognition of a cause.
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.
„Über diesen Titel“ kann sich auf eine andere Ausgabe dieses Titels beziehen.
Weitere beliebte Ausgaben desselben Titels
Suchergebnisse für The Law of Inheritance: Or the Philosophy of Breeding...
Beispielbild für diese ISBN
The Law of Inheritance
Anbieter: PBShop.store US, Wood Dale, IL, USA
Verkäuferbewertung 5 von 5 Sternen
PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Artikel-Nr. LW-9781330557877
Beispielbild für diese ISBN
The Law of Inheritance
Anbieter: PBShop.store UK, Fairford, GLOS, Vereinigtes Königreich
Verkäuferbewertung 5 von 5 Sternen
PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Artikel-Nr. LW-9781330557877
Neu kaufen
EUR 16,76
Versand:
EUR 3,76
Von Vereinigtes Königreich nach USA
Anzahl: 15 verfügbar