HOW THE GLANDS INFLUENCE THE MIND 169 



breeding season. In birds, the seasonal nesting and migrating 

 instincts may be eliminated by interfering with their ovaries. 

 At the same time there is a change in their plumage toward the 

 male type. Similarly, the males, when their sex endocrines are 

 cut off, will change their psychic nature as well as physically. 

 Besides owning his flag-waving comb, his spurs and brighter 

 feathers, the rooster struts to attract the female, and fights 

 aggressively with his sex competitors. When he is made a capon, 

 he loses his spurs and comb and distinctive plumage, and in 

 addition becomes retiring and submissive, in short, a pseudo-hen 

 in his instincts as well as in appearance. If the genital glands 

 are extirpated from a male before puberty, the wattles remain 

 small, pale and bloodless, no active, amorous or combative in- 

 stinct emerges. The creature maintains a demure silence, and 

 may even be sought by a virile male. So we may see homo- 

 sexuality of a kind in the lowest animals. On the other hand, 

 hens deprived of ovaries tend to metamorphose in the male direc- 

 tion, even to acquire the male spurs, and to display the male 

 attitudes. 



All through the animal world, in the springtime, when the 

 pituitary awakens or increases its secretion, and so stimulates the 

 sex glands to augmented activity, emotions of sex and their ex- 

 pression are provoked by the inner stirring. When the nightin- 

 gale warbles passionately and the mocking bird gurgles provok- 

 ingly, when the robin fills its scarlet breast and the starling floats 

 in ecstasy through the perfumed air, when the pigeon coyly woos 

 its mate, and the butterfly flirts with the dazzling multicolors of 

 its wings, when all the marvelous devices of sex attraction in 

 nature, selection and courting, mating and reproducing are pon- 

 dered, who but must wonder at the infinite possibilities of 

 reaction of the sex hormones? All is for love, and all is because 

 of the love in the blood that is manufactured unconsciously by a 

 few hidden cells. 



Expressionism and Exhibitionism 



We need a detailed examination of the various forms of ex- 

 pression art has differentiated into, in its relation to exhibition- 

 ism and as effects of the circulating libido-producing substance 

 of the gonads. Sex exhibition differs in man and woman because 

 of the differently combined internal secretions that are their 

 substrates. The male's attitude, aggressive pursuit, is instigated 



