girl boy adolescent youth

THE DETERMINATION OF SEX

The term “The Determination of Sex” is employed in two general senses in scientific circles. The first usage is that of the biologist, and it includes within its scope merely the discovery and understanding of the causes which determine whether the embryo shall develop into a male or into a female. In the discussion of the subject…

girl boy adolescent youth

PHYSIOLOGY OF THE FEMALE SEX ORGANISM

In the preceding lesson you have been shown “just what” each one of the sex organs of the woman is. In the present lesson you will be shown “just what” each of these organs does—what its functions and offices are. The preceding lesson dealt with the anatomy of these organs; the present lesson will deal with the physiology thereof. Beginning with…