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The title of this book is misleading because the material presented does not involve a physicochemical analysis of sexuality, although the author apparently considers his method of attack sufficiently accurate and critical from a physicochemical point of view to warrant the interpretations he has made. The question of sexuality cannot as yet be treated from such a point of view but rather on a more biologic basis with attempts at correlating the scanty and, many times, exceedingly inaccurate biochemical information into this involved question. The main theses the author wishes to defend or establish are, first, that the origin of sex is not determined or influenced entirely from without or from within; second, that the control from within is not primarily of hormone nature; and, third, that the "physicochemical" studies on the various aspects of the problem nevertheless lead to a general conception of the phenomenon of sexuality. He refers
Protoplasma-Monographien.. JAMA. 1932;98(14):1212-1213. doi:10.1001/jama.1932.02730400090036