In the embryo, the cortex is derived from the same patch that gives rise to the sex organs, the ovaries in the female, and the testes in the male, described as the germinal epithelium.

The mixed ensemble of the directly contrasting type, such as the concomitance of testes with feminine secondary sex traits, or of ovaries with masculine sex traits, have been described from time immemorial as freaks.

Now, as the experiments of Steinach upon the transplantation of ovaries into males deprived of their testes and of testes into females deprived of their ovaries have demonstrated, the removal of the interstitial cells of one sex assists enormously in arousing the opposite sex traits that have been latent, homosexuality.

" Edith listened intently while her governess showed her the ovary of a blossom safe on the twig where it grew, and explained to her that it was this which, nourished by the sap of the tree, with the aid of the sun and air, would ripen into fruit, while the petals were merely a fringe or ornament to the true blossom.