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The Reactions Of Planarians
In this groundbreaking study, pioneering biologist George Howard Parker explores the fascinating world of planarian worms and their neural response to light stimuli. Filled with detailed illustrations and insightful analysis, this book is a must-read for anyone interested in the science of animal behavior and the workings of the nervous system. 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 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. 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.
The Evolution of Man
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The World Expands
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Animal Colour Changes and Their Neurohumours
Originally published in 1948, this book covers the main papers published on animal colour changes between 1910 and 1943. It is a continuation of the work of van Rynberk and Fuchs, who produced important reviews of the topic in 1906 and 1914 respectively. During the period covered, the topic underwent a considerable growth in interest. This is reflected in a bibliographical list of over 1200 items at the end of the text, over twice the number given by Fuchs for the whole period up to 1914. Containing rigorous analysis and illustrations throughout, this book will be of value to anyone with an interest in chromatophores and the history of science.
Humoral Agents in Nervous Activity
Originally published in 1932, this book examines how hormones and nervous impulses affect the body, with special reference to animals with colour-changing abilities. Parker gives examples from various areas of the animal kingdom, both vertebrates and invertebrates, to demonstrate how the stimulation of certain sensory organs and nerves can produce very different effects and to draw wider conclusions about the role that 'nervous secretion' can play in other physiological operations. This book will be of value to anyone with an interest in the history of science and comparative physiology.
