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In this book, which is based chiefly on previous publications by Gottstein and Noeggerath, the author presents metabolic data obtained from children before, during, and after work of a standard character. His purpose was to differentiate one type of child from another as regards the efficiency in which they perform and recover from work. Knowing his reaction to work, the author believes that one can, on the one hand, more intelligently select the type of work, profession, or play best suited to the individual; on the other hand, one can give a better prediction as to the individual's probable reaction to disease; on a physiologic basis one can determine for him what restrictions as regards bodily exercise are necessary during convalescence from disease.
Comparing the total ventilation with the oxygen need, the author divided normal children into three groups: (1) those who showed hypoventilation or orthoventilation during both work and