face when they send their sperms into the water.
As soon as the sperms have left the rooster they go up through the hen until they meet the egg as it leaves the ovary. The hard shell which we must break when we eat an egg has not yet formed about it and one of the sperms—only one—succeeds in entering the egg. The tail of the sperm drops off and stays outside but the rest of the sperm joins the egg. The egg with the help of the sperm now starts growing, and if, after it is laid, it is kept warm it will keep on growing, until it has become a little chicken.
The dog, the lion, the horse, the pig place their sperms in the body of the mother in much the same way that the rooster does but the sperms instead of going through an opening as they do with the rooster pass from these animals through a little pipe or tube that is on the outside of the body. This little pipe or tube is called the penis. When the male animal sends the sperms to the female he seems to be trying to climb on to her back. As he does this the penis fits into an opening in her body. This is the opening of what we call the vagina,
