Excerpt from Human Physiology: A Text-Book for High Schools and Colleges
Text-books of science may be placed in two classes. There are those which aim at fullness of statement, and seek to acquaint their readers with experimental methods and original sources. Such books must give a large place to controverted matters, weighing conflicting evidence and comparing the views of various workers. The making of them is properly in the hands of great masters of the several branches.
Other books have a more modest scope. Their purpose is to present concisely the accepted facts with only a limited description of the experiments by which these facts have been established. They contain comparatively little about unsettled questions though they are at fault if they do not make it plain that these confront the investigator at every turn. They may be written by teachers who have not lost the point of view of elementary students or ceased to sympathize with them in their perplexities.
The present book belongs definitely to the second class. An extreme course of action has been adopted with regard to the accrediting of discoveries. It is certainly a source of irritation and bewilderment to the beginner to have the pages he reads sprinkled thickly with the names of men of whom he has never heard before. In the chapters that follow no mention is made of living experimenters though a few eminent physiologists of earlier times are referred to. It has been hard not to make exceptions and the use without acknowledgment of illuminating ideas and happy teaching devices which I owe to my contemporaries has aroused a feeling akin to guilt. Some atonement may be found in the list of collateral readings at the end of the book.
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