In the creation of the world and all that therein is, we should consider it an axiom that "Everything was created for use." All individual substances, or beings, that come to our notice bear certain relations to one another, have connection one with another, and are dependent upon and useful to each other; and nothing could possibly exist or subsist without this co-relation: connection with and use to each other. This is a law which needs only a little reflection to be accepted as a truth in every particular--in the greatest as well as in the least created form. This is more plainly seen in the animal kingdom than in the mineral or vegetable, because its members associate and finally become conjoined in pairs. Man and woman, who represent the crown and glory of all created beings, in whom are embodied all the lower orders, were and are still created to associate in pairs--each created for the other, the one to help the other; the two to love and to belong to one another. This principle, fully carried out, justifies and shows the necessity for the creation of man and woman precisely as they are, having bodies, parts and passions, will and understanding. It is my intention in the following pages to explain the relations existing between the sexes, for the purpose of showing that the greatest happiness to the human race will be found in living a life in full accord with these relations. In order that the subject may be fully understood, let us examine the physical development of man and woman in detail, particularizing the different organs of the body as they appear in their order of formation, from the very inmost or beginning, to the ultimate or end, in their respective natures. Ever since the primal creation of man and woman, the human race has been perpetuated by a series of births. Children have been conceived in harmony with the natural order of events, in such matters, and have been born boys and girls. A boy is a boy to all intents and purposes from his very conception, from the very earliest moment of his being; begotten by his father he is a boy in embryo within the ovule of his mother. The converse is true of the opposite sex. At this very early age of reproduction the embryo has all the elements of the future man or woman, mentally and physically, even before any form becomes apparent; and so small is the human being at the earliest stage of its existence that no material change is observable between the ovule that contains the product of conception and a fully developed ovule unimpregnated.[A] [A] For fuller particulars see Guernsey's Obstetrics, 3d edition, pages 79-89, inclusive.