Take the roses for example. When the big rose gets fully grown in the latter part of the summer, the little yellow dust you see in the center is the male seed. Botanists call these male flower seeds the pollen. At about the same time that the male rose is “going to seed” the female rose is ready to take this pollen into her receptacle. This male seed is carried to the female rose’s womb, the name of the organ in all females where the two kinds of seed meet and then grow into children. The seed is carried into the rose’s womb by the wind, insects and birds. When it is once deposited, the rose’s womb closes tightly, and there the seeds of the two sexes remain and grow until in the spring you see the little babies in the buds. These gradually grow, as you know, from the little colorless buds to the small pink ones, and when the warm summer-time comes they burst open to become full-grown male or female flowers, and in the autumn these marry and the next spring become fathers and mothers themselves. It is the same throughout all Nature. Nothing can become a living thing except through a marriage of the male with the female. Let us take the little birds for another example. This will show you how the young bird comes from an egg and is born almost the same way that you and I were born――coming from an egg――for this is just what did occur in our case. The female birds, and all female animals, have what we call ovaries, from the Latin _ovum_, meaning egg. These ovaries are placed, in the birds and all animals, in the deep region of the groin, above the womb in the animals which keep the eggs inside of themselves until the babies are born. Of course, the birds, fishes and all their kind, do not have a real womb, for the eggs are laid outside of their bodies in a nest of some kind. This nest outside corresponds to the nest――the womb――inside of the higher animals. All eggs are formed in the ovaries; this is what the ovaries are for, and at first they are tiny little spots seen only through a microscope. At certain times, like the mating time of the birds, these eggs drop down from the ovaries, ready to meet the male seed. When this is accomplished the eggs at once begin to put on their shells, which, of course, are only to protect the little growing birds while the mother sits upon the eggs. As soon as the shell is formed the eggs are deposited in the nest, and here the patient mother sits and waits for the little ones to grow until ready to come out and see the wide world. Then comes the pretty sight of the mother and father flying back and forth from the nest, carrying some big worm or bug to feed the hungry and crying babies. Both father and mother work like Trojans to keep the stomachs of their little children filled, and if you will watch a pair of robins trying to feed their nestful of children, you will say that they are the greediest little things you ever saw.