"You are old, Father William," the young man cried, "The few locks which are left you are gray; You are hale, Father William, a hearty old man,- Now tell me the reason I pray. "
To indicate how large a part of the Earth is covered by the oceans, we might call attention to the fact that a whole hemisphere, with its center near New Zealand, would have only one-tenth of its area as dry land! And the average depth of the seas is over two miles.