THE effect of oxygen—and the lack of it—on the respiratory
centres is an important and complicated study. Dr. Barcroft is one of the great living authorities on the subject, and the conclusions he has reached, not in the study or laboratory alone (in the laboratory he has submitted to experiments in propria persona, which show how ready he is to give body as well as brain to the cause of research) but also on the high mountains of the world, make reading of absorbing interest to all who care for physiology. More and more laymen are becoming interested in the subject—and why not ? This book tells us what happens to our blood pressure, nerves, kidneys, lungs, brain on the Himalayas and Andes, also how we ventilate our bodies at great altitudes and at sea-level, which is knowledge one may turn to very practical account.
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