ts. Actual observations and actual experiments are as
necessary to illuminate the text and to illustrate important principles in
physiology as they are in botany, chemistry, or physics. Hence, as
supplementary to the text proper, and throughout the several chapters, a
series of carefully arranged and practical experiments has been added. For
the most part, they are simple and can be performed with inexpensive and
easily obtained apparatus. They are so arranged that some may be omitted
and others added as circumstances may allow.

If it becomes necessary to shorten the course in physiology, the various
sections printed in smaller type may be omitted or used for home study.

The laws of most of the states now require in our public schools the study
of the effects of alcoholic drinks, tobacco, and other narcotics upon the
bodily life. This book will be found to comply fully with all such laws.

The author has aimed to embody in simple and concise language the latest
and most trustworthy information which can be obtained from the standard
authorities on modern physiology, in regard to the several topics.

In the preparation of this text-book the author has had the editorial help
of his esteemed friend, Dr. J. E. Sanborn, of Melrose, Mass., and is also
indebted to the courtesy of Thomas E. Major, of Boston, for assistance in
revising the proofs.

Albert F. Blaisdell.

Boston, August, 1897.

Contents.

Chapter I. Introduction
Chapter II. The Bones
Chapter III. The Muscles
Chapter IV. Physical Exercise
Chapter V. Food and Drink
Chapter VI. Digestion
Chapter VII. The Blood and Its Circulation
Chapter VIII. Respiration
Chapter IX. The Skin and the Kidneys
Chapter X. The Nervous System
Chapter XI. The Special Sense
Chapter XII. The Throat and the Voice
Chapter XIII. Accidents and Emergencies
Chapter XIV. In Sickness and in Health
Care of the Sick-Room; Poisons and their Antidotes; Bacteria;
Disinfectants; Management of Contagious Diseases.
Chapter XV. Experimental Work in Physiology
Practical Experiments; Use of the Microscope; Additional Experiments;
Surface Anatomy and Landmarks.

Glossary

Index

Chapter I.

Introduction.

1. The Study of Physiology. We are now to take up a new study, and in
a field quite different from any we have thus far entered. Of all our
other studies,--mathematics, physics, history, language,--not one comes
home to us with such