Thus it is that muscular and otherwise masculine women produce weakling males. (Giant women--female-Dominants--are incapable of reproduction.) Tall mothers may produce tall sons, by transmitting to them the single trait of tallness of the maternal grandfather. But since tallness in woman is development along masculine lines, and detracts from her maternal power, the tall son in such case is likely to be defective in other manly traits. Men are of greater height than women, mainly in consequence of greater length of leg. The power expended in the male in length of limb is absorbed in the female into complex pelvic developments, wherein it is stored as Reproductive potential. The power thus stored in latency reveals itself in the amazing evolution, as regards capacity and muscular equipment, by way of which the maternal _uterus_ so develops during pregnancy as to enable it to cradle an infant of 9 or 10 lbs. weight, and to deliver this by output of immense energy--a marvel of biological function and mechanism. Since the male trait of Tallness may be transmitted by woman from her father to her son, without manifesting in herself, it is obviously waste of power for her to develop a characteristic she needs neither for personal nor for hereditary purposes. Whereas, by further evolving her own woman-traits of suppleness and grace, she contributes new factors to those of the male. And so with all the other sex-characteristics. Mr. Horace G. Regnart, M.A., the well-known breeder of pedigree stock, states that a bull of marked _masculine_ characteristics sires daughters of marked _feminine_ characteristics. While the _feminine_ cow bears sons of strongly _masculine_ type. On the other hand, the daughters of a "steery" bull (a bull of de-sexed type) are themselves defective in female characteristics, and bear sons defective in male characteristics. VIII Clearly and fully defined, accordingly, as Sex-characteristics are in proportion as the individual is of high and normal organisation, obtrusions in the one sex of the traits of the other are as much stigmata of abnormality as are cleft-palate, webbed feet, or other deviations from the normal. Because they are reversions to lower types of organisation in which sex was less highly differentiated than is the normal of to-day. Although, with progressive evolution, the Sex-traits are spun ever finer and finer, and are ever more subtly and inextricably interwoven with those of the other, normally the threads run true and distinct as do the threads of warp and woof in textile fabric. The ever finer spinning of the threads secures an ever closer, subtler interweaving. Whereby the fabric of human organisation, of character and Faculty, becomes ever firmer yet more supple, ever stronger yet more delicate, ever more intense and rich of colour, but nevertheless more beautifully harmonised and subtilised by half-tones and complex gradations.