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This small book is devoted to expounding the thesis that man's intellectual supremacy depends on his having assumed the upright position, and that throughout the animal kingdom intellectual development varies directly with the extent to which the animal has lifted its head above the ground. Illustrations are drawn particularly from the fauna of Australia, which contains stages of evolution not seen elsewhere; it is "the land of living fossils." As here presented the exposition is dogmatic. Statements such as "Intelligence has a muscular basis," "The basis of chronic illness is muscular inefficiency," and "The basis of preventive medicine is maintenance and strengthening of the human erect posture" occur without qualification and without the presentation of evidence to satisfy the critical reader. This obnoxious person puts down the book with the thought that the author has presented some interesting thoughts but has not proved his case.
Intellectual Development and the Erect Posture.. JAMA. 1925;84(1):58. doi:10.1001/jama.1925.02660270062044