SOME INTERRELATIONS OF SEXUALITY, REPRODUCTION AND INTERNAL SECRETION

These fast-moving decades are forcing many new and complicated phenomena into the perspective of the physician and the physiologist. The higher animals and man are continually disclosing subtle mechanisms, capacities and interrelationships of their parts, which challenge persistent research; indeed, their complexity often temporarily baffles the combined best efforts of science. No one supposes that these organisms—and living matter generally—will fail to continue to display still unsuspected powers and adjustments. It is certainly true that at present each step taken in the analysis of the phenomena of sex and of reproduction is more firmly fixing one or another of the organs of internal secretion into an already intricate mechanism.

This communication is principally an outline of some of the interrelationships that have been investigated in our laboratory. These studies are, of course, more directly concerned with an understanding of mechanisms and interrelationships in higher animals than with medicine. This opportunity