Von Dr. E. A. Spiegel, Privatdozent, Assistent am neurologischen Institut der Universität Wien. Second edition. Paper. Price, 18 marks. Pp. 202, with 72 illustrations. Berlin: Julius Springer, 1927.
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This is a short but excellent monograph on a subject of fundamental importance both in physiology and in medicine. There are five chapters: a short one on the historical development of our conception of tonus; a chapter on the energetics of tonus in muscle; a chapter on the methods of measuring tonus, in which the author describes, among other things, a method introduced by himself; a long chapter on the reflex of central nervous factors in tonus, and a final chapter on the question of sympathetic and parasympathetic nervous system relations to the tonus mechanism. The presentations of the data are generally lucid, critical and sound; but some of the important recent publications seem to have escaped the author's notice; for example, the paper by Dr. Tower on the question of sympathetic nervous relation to skeletal muscle tonus.
Der Tonus der Skelettmuskulatur.. JAMA. 1928;90(7):567. doi:10.1001/jama.1928.02690340069042