Meanwhile the chromosomes in each new division group themselves (not round but) near their respective poles or centrosomes, and a new nucleus membrane forming, encloses each group, so that finally we have two cells of exactly the same constitution as the original one, and with exactly the same number and quality of chromosomes as the original.[7] The whole process seems very strange and wonderful. No military evolutions and formations, no complex and mystic dance of initiates in a temple, with advances and retreats, and combinations and separations, and exchanges of partners, could seem more fraught with intelligence.[8] Yet this is what takes place among some of the very lowest forms of life, on the division of a single cell into two. And it is exactly the same, apparently, which takes place in the higher forms of life when the single cell which is the result of the fusion together of the sperm-cell and the germ-cell, divides and subdivides to form the ‘body’ of the creature. As is well known, the joint cell divides first into two; then each of the cells so formed divides into two, making four in all; then each of these divides into two, making eight; then each into two again, making 16, 32, 64, and so on—till they number the thousands, hundreds of thousands, millions, which in effect build up and constitute the body. And at each division the process is carried out with this amazing care and exactness of partition described—so that every cell is verily continuous and of the same nature with the original cell, and contains the same nuclear elements, derived half from the father and half from the mother. Yet in the process a differentiation has set in, so that in the end each cell becomes so far modified as to be adapted for its special position and function in the body—for the skin, mucous membrane, blood corpuscles, brain, muscular tissue, and so forth.[9] It is worth while looking carefully at the body of an animal, or one’s own body, in order to realize what this means—to realize that the entire creature, in all its form and feature, its coloring, marking, swiftness of limb, complexity of brain, and so on, has provably been exhaled from a single cell, _is_ indeed that original cell with its latent powers and virtue made manifest; and to remember that that original cell was itself the fusion of two parent cells, the male and the female. A word, then, upon this matter of the fusion of the two parent cells in one. Here, again, two very remarkable things appear. One refers to the equality of the sexes; the other refers to the onesidedness (or deficiency or imperfection) which seems to be the characteristic _and_ the motive power of the phenomenon of sex.