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Author: Essex Institute
Publisher: Forgotten Books
ISBN: 9780666975256
Category : Science
Languages : en
Pages : 826
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Book Description
Excerpt from The American Naturalist The parents of the mice to be discussed had been divided, at the commencement of life, into two lots, which were reared in separate rooms, differing widely in tem perature.' Prior to the time of the pairing, they had been exposed to these conditions for an average period of about six months. For reasons which I shall not here state, ' the two contrasted groups (warm and cold lots) were not transferred to a common room before pairing.5 Indeed, the females were not removed to such a room until the time that each was discovered to be pregnant. The discovery was made, on the average, about five days before the birth of the young, i. E about two weeks after the actual commencement of pregnancy. This circumstance is of possible importance in interpret ing the results obtained. On that subject, more anon. 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: Essex Institute
Publisher: Forgotten Books
ISBN: 9780666975256
Category : Science
Languages : en
Pages : 826
Get Book Here
Book Description
Excerpt from The American Naturalist The parents of the mice to be discussed had been divided, at the commencement of life, into two lots, which were reared in separate rooms, differing widely in tem perature.' Prior to the time of the pairing, they had been exposed to these conditions for an average period of about six months. For reasons which I shall not here state, ' the two contrasted groups (warm and cold lots) were not transferred to a common room before pairing.5 Indeed, the females were not removed to such a room until the time that each was discovered to be pregnant. The discovery was made, on the average, about five days before the birth of the young, i. E about two weeks after the actual commencement of pregnancy. This circumstance is of possible importance in interpret ing the results obtained. On that subject, more anon. 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: Essex Institute
Publisher: Forgotten Books
ISBN: 9780484082617
Category : Science
Languages : en
Pages : 724
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Book Description
Excerpt from The American Naturalist, Vol. 2 Entered according to Act of Congress, in the year 1888, by the peabody academy OF science, in the Clerk's Office of the District Court of the District of Massachusetts. 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: Essex Institute
Publisher: Forgotten Books
ISBN: 9780259960133
Category : Science
Languages : en
Pages : 822
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Book Description
Excerpt from The American Naturalist, Vol. 6 Entered, according to Act of Congress, in the year 1872, by the peabody academy OF science, in the omce of the Librarian of Congress, at Washington. 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: American Society of Naturalists
Publisher: Forgotten Books
ISBN: 9780282270131
Category : Science
Languages : en
Pages : 736
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Book Description
Excerpt from The American Naturalist, Vol. 3 The knowledge and use of peculiar narcotics and alcoholic beverages by portions of the human race, both civilized and barbarous, unacquainted with and widely separated from each other is a well-known fact. Analogous to this is the use of some form of money or a medium in trade by isolated and remote tribes. 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: American Society of Naturalists
Publisher: Forgotten Books
ISBN: 9780266543572
Category :
Languages : en
Pages : 598
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Book Description
Excerpt from The American Naturalist, Vol. 25: July, 1891 As regards the ordinal terms, Allotheria and Pantotheria, they have not as yet been defined or adopted.7 The former is equiv alent to the Multituberculata, which has been defined and is now in general use 8 the latter is only used by the author in the reference of one genus. 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: American Society of Naturalists
Publisher: Forgotten Books
ISBN: 9780267949281
Category : Science
Languages : en
Pages : 776
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Book Description
Excerpt from The American Naturalist, 1909, Vol. 43 After the plant has reached about a decimeter in length the basal cone ceases to increase and later is lost in the growth of the stipe (fig. At the same time the disc begins to enlarge and spread out on the substratum, giv ing a firmer hold for the increasing lamina above. This enlargement is clearly in the region of the primitive disc and not in the conical basal swelling above, which remains part of the stipe. These two tendencies of growth work ing together usually cause the sharp distinction between the holdfast and stipe to reappear, and in plants more than 15 cm. Long the conical base is seldom prominent (fig. In adults the disc becomes very flat and thin by its continued extension (fig. Has. 7-11. Bentrewia. Series at young plants showing the devempment of the basal cone. Four fifths natural size. 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: Ferris Bros
Publisher: Forgotten Books
ISBN: 9780282704391
Category : Science
Languages : en
Pages : 24
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Book Description
Excerpt from The American Naturalist, Vol. 25: A Monthly Journal Devoted to the Natural Sciences in Their Widest Sense; September, 1891 The above remarkable words for many years have served to sustain my interest in the endeavor to substitute the actual for his provisional solution of soaring flight. 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: EDWARD D. COPE
Publisher:
ISBN: 9780282225698
Category :
Languages : en
Pages : 0
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Book Description
Author: Essex Institute
Publisher: Forgotten Books
ISBN: 9780259997313
Category : Science
Languages : en
Pages : 666
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Book Description
Excerpt from The American Naturalist, Vol. 24: July, 1890 The line of successional modification of the Cetacea is found in changes in (i) the shape of the skull (2) the extinction of the dentition (3) the shortening of the cervical vertebra and (4) in the separation of the ribs from articulation with the vertebral centra. The modification of the shape of the skull is related to the gradual transfer of the external nostrils to more and more posterior positions, until they remain, in the extreme types, above, or even behind above, the eyes. In this process the nasal, frontal and parietal bones become excessively abbreviated, so that in the modern toothed whales, they form a narrow hand between the nostrils and the superior border of the occipital bone. The order is naturally divided into three sub-orders, which are defined as follows External nostrils on the superior side of the muzzle. 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:
Publisher: Forgotten Books
ISBN: 9780267847112
Category : Science
Languages : en
Pages : 484
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Book Description
Excerpt from The American Naturalist, Vol. 40: An Illustrated Magazine of Natural History N otcs and Literature Anthropology Anthropology, Notes Astronomy and Physics Biology Botany Botany, Notes. 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.
