The Journal Of Experimental Zoology 1921 Vol 33 Classic Reprint PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download The Journal Of Experimental Zoology 1921 Vol 33 Classic Reprint PDF full book. Access full book title The Journal Of Experimental Zoology 1921 Vol 33 Classic Reprint.
Author | : Ross G. Harrison |
Publisher | : Forgotten Books |
Total Pages | : 508 |
Release | : 2019-01-16 |
Genre | : Science |
ISBN | : 9780267973750 |
Download The Journal of Experimental Zoology, 1919, Vol. 28 (Classic Reprint) Book in PDF, ePub and Kindle
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 |
Total Pages | : 610 |
Release | : 2018-02-04 |
Genre | : Science |
ISBN | : 9780483090088 |
Download The Journal of Experimental Zoology, 1936, Vol. 20 (Classic Reprint) Book in PDF, ePub and Kindle
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 | : Ross G. Harrison |
Publisher | : Forgotten Books |
Total Pages | : 616 |
Release | : 2018-02-02 |
Genre | : Science |
ISBN | : 9780267625369 |
Download The Journal of Experimental Zoology, 1918, Vol. 24 (Classic Reprint) Book in PDF, ePub and Kindle
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 | : John Dewey |
Publisher | : Createspace Independent Publishing Platform |
Total Pages | : 456 |
Release | : 1916 |
Genre | : Juvenile Nonfiction |
ISBN | : |
Download Democracy and Education Book in PDF, ePub and Kindle
. Renewal of Life by Transmission. The most notable distinction between living and inanimate things is that the former maintain themselves by renewal. A stone when struck resists. If its resistance is greater than the force of the blow struck, it remains outwardly unchanged. Otherwise, it is shattered into smaller bits. Never does the stone attempt to react in such a way that it may maintain itself against the blow, much less so as to render the blow a contributing factor to its own continued action. While the living thing may easily be crushed by superior force, it none the less tries to turn the energies which act upon it into means of its own further existence. If it cannot do so, it does not just split into smaller pieces (at least in the higher forms of life), but loses its identity as a living thing. As long as it endures, it struggles to use surrounding energies in its own behalf. It uses light, air, moisture, and the material of soil. To say that it uses them is to say that it turns them into means of its own conservation. As long as it is growing, the energy it expends in thus turning the environment to account is more than compensated for by the return it gets: it grows. Understanding the word "control" in this sense, it may be said that a living being is one that subjugates and controls for its own continued activity the energies that would otherwise use it up. Life is a self-renewing process through action upon the environment.
Author | : Paul C. Cozby |
Publisher | : WCB/McGraw-Hill |
Total Pages | : 300 |
Release | : 1989 |
Genre | : Psychology |
ISBN | : |
Download Research Methods in Human Development Book in PDF, ePub and Kindle
For undergradute social science majors. A textbook on the interpretation and use of research. Annotation copyright Book News, Inc. Portland, Or.
Author | : Walter Lippmann |
Publisher | : |
Total Pages | : 448 |
Release | : 1922 |
Genre | : Public opinion |
ISBN | : |
Download Public Opinion Book in PDF, ePub and Kindle
In what is widely considered the most influential book ever written by Walter Lippmann, the late journalist and social critic provides a fundamental treatise on the nature of human information and communication. The work is divided into eight parts, covering such varied issues as stereotypes, image making, and organized intelligence. The study begins with an analysis of "the world outside and the pictures in our heads", a leitmotif that starts with issues of censorship and privacy, speed, words, and clarity, and ends with a careful survey of the modern newspaper. Lippmann's conclusions are as meaningful in a world of television and computers as in the earlier period when newspapers were dominant. Public Opinion is of enduring significance for communications scholars, historians, sociologists, and political scientists. Copyright © Libri GmbH. All rights reserved.
Author | : Charles J. Krebs |
Publisher | : Benjamin-Cummings Publishing Company |
Total Pages | : 695 |
Release | : 2001 |
Genre | : Science |
ISBN | : 9780321068798 |
Download Ecology Book in PDF, ePub and Kindle
This best-selling majors ecology book continues to present ecology as a series of problems for readers to critically analyze. No other text presents analytical, quantitative, and statistical ecological information in an equally accessible style. Reflecting the way ecologists actually practice, the book emphasizes the role of experiments in testing ecological ideas and discusses many contemporary and controversial problems related to distribution and abundance. Throughout the book, Krebs thoroughly explains the application of mathematical concepts in ecology while reinforcing these concepts with research references, examples, and interesting end-of-chapter review questions. Thoroughly updated with new examples and references, the book now features a new full-color design and is accompanied by an art CD-ROM for instructors. The field package also includes The Ecology Action Guide, a guide that encourages readers to be environmentally responsible citizens, and a subscription to The Ecology Place (www.ecologyplace.com), a web site and CD-ROM that enables users to become virtual field ecologists by performing experiments such as estimating the number of mice on an imaginary island or restoring prairie land in Iowa. For college instructors and students.
Author | : Urie BRONFENBRENNER |
Publisher | : Harvard University Press |
Total Pages | : 349 |
Release | : 2009-06-30 |
Genre | : Psychology |
ISBN | : 0674028848 |
Download The Ecology of Human Development Book in PDF, ePub and Kindle
Here is a book that challenges the very basis of the way psychologists have studied child development. According to Urie Bronfenbrenner, one of the world's foremost developmental psychologists, laboratory studies of the child's behavior sacrifice too much in order to gain experimental control and analytic rigor. Laboratory observations, he argues, too often lead to "the science of the strange behavior of children in strange situations with strange adults for the briefest possible periods of time." To understand the way children actually develop, Bronfenbrenner believes that it will be necessary to observe their behavior in natural settings, while they are interacting with familiar adults over prolonged periods of time. This book offers an important blueprint for constructing such a new and ecologically valid psychology of development. The blueprint includes a complete conceptual framework for analysing the layers of the environment that have a formative influence on the child. This framework is applied to a variety of settings in which children commonly develop, ranging from the pediatric ward to daycare, school, and various family configurations. The result is a rich set of hypotheses about the developmental consequences of various types of environments. Where current research bears on these hypotheses, Bronfenbrenner marshals the data to show how an ecological theory can be tested. Where no relevant data exist, he suggests new and interesting ecological experiments that might be undertaken to resolve current unknowns. Bronfenbrenner's groundbreaking program for reform in developmental psychology is certain to be controversial. His argument flies in the face of standard psychological procedures and challenges psychology to become more relevant to the ways in which children actually develop. It is a challenge psychology can ill-afford to ignore.
Author | : |
Publisher | : |
Total Pages | : 335 |
Release | : 2005-01-01 |
Genre | : Animal experimentation |
ISBN | : 9781904384106 |
Download The Ethics of Research Involving Animals Book in PDF, ePub and Kindle
A report of the Nuffield Council on Bioethics working party investigating the ethical issues of research involving animals.
Author | : William Whewell |
Publisher | : Hackett Publishing |
Total Pages | : 386 |
Release | : 1989-01-01 |
Genre | : Philosophy |
ISBN | : 9780872200821 |
Download Theory of Scientific Method Book in PDF, ePub and Kindle
Includes the author's seminal studies of the logic of induction, arguments for his realist view that science discovers necessary truths about nature, and exercises in the epistemology and ontology of science.