Thus far male costume and female costume will be practically identical. There is no reason to expect, however, that this identity will be carried so far as the externals of dress, because realising (as we shall of course realise) the tendency of the sexes to become less divergent in their natural and moral characteristics, we shall instinctively seek to maintain all the salutary and romantic contrast that we can. But it is not to be believed that woman, already long since emancipated from the corset, will have continued a slave to the skirt, the petticoat and other restraining garments. With underclothes practically identical with the sensible garments of men, our female descendants will no doubt wear a costume much like what Miss Rehan wore as Rosalind--a tunic and knee-skirt (probably in one) with gaiters made of some elastic material. Deprived as we shall be of animal products, the leather boot will naturally be unavailable, and a totally different kind of foot covering will be used. But it is not the absence of leather which will determine this change. Perfectly satisfactory boots of the present form are worn by some extreme vegetarians already, carrying consistency to its limit. With the disappearance of the horse from the streets, however--a disappearance which will doubtless be at least seventy years old by this time next century (for the motor car is fast pushing out the horse already)--the chief need for an entirely impervious foot-covering will have been obviated. Towns will be sanitary underfoot--they are disgusting now--and free from mud; while the drying appliances mentioned in an earlier chapter will clear away rain as fast as it falls. Consequently it will no longer be necessary to wear uncomfortable, unhealthy and deforming boots; the human foot will cease to be the source of discomfort it now more or less acutely is to nine people out of every ten, and we shall be much better walkers and athletes. For health will be the consideration dominating all our actions, health being a subject of careful tuition in every school: and as men and women will rarely need to use muscular strength in their work, they will gratify the natural yearning of healthy animals for exertion, in athletic sports, by no means confined to the male sex. Whether fashion as an institution will continue to exist is doubtful, but probably it will not exhibit the extravagances, nor the capricious development which now characterise it, and "a general uniformity with infinitesimal differences," which has been defined as one of Nature's uniformities, will be perceptible in the natural development of the race.