This may be a good place to ask where the fresh water supply comes from to produce these atolls. That they are produced by fresh water there can be no question, as the work of coral is never performed without an abundance of this element to build through. That the bottom of the ocean has many subterranean rivers nobody will dispute. That nearly every island in the ocean has springs of fresh water, none can deny. Where does it come from? Many of these islands have thermal springs, like Iceland with its geysers of many varieties. Some with common fresh water, and nearby springs of mineral water. One familiar to this region is Block Island with both fresh water and mineral springs, and little lakes on the high ground alive with fresh water fish. Are they supplied with rain water? Mount Desert is a very good witness to call. Here is an island eighteen miles in diameter surrounded by salt water with an elevation of 1,800 feet, and 1,200 feet above the ocean are three fine lakes, Eagle Lake, Crooked Lake, and Echo Lake. In which lakes are trout weighing eight or ten pounds. On this small island are to be found thousands of springs pouring out from every crack and crevice. The water is pure and clear as in all such cases. Where does it come from? No more generous gift to man and all animated nature, has been bestowed by Providence than the universal distribution of springs all over the world. Within twenty rods of the top of Mount Washington, the highest peak in the New England States, flows out a copious spring of water. The whole mountain system is full of springs and lakes. The entire Adirondack region is in the same condition. It is safe to leave it to the reader who has ever been out of sight of the smoke of his own chimney to think of the abundance of instances where he has seen lakes and springs on the tops of high hills, where no shed water to any extent could reach them, and wonder how they came there. To assume that rains sink into the ground and form water supplies, seems incredible when the experience of any man who has ever dug a well or sunk a shaft in a mountain, or tunneled under a hill ought to disprove such an idea at once. As we dig down we always meet water, and the deeper we get the more we find. Where does the water from the surface turn around to come back? Some of the water coming up is salt, some fresh, some hot, but mostly of a uniform coolness of about fifty degrees. X. GLACIERS. We hear a great deal said about the age of Glaciers. This is assuming that the Earth has at some time been in a condition to be almost uninhabitable, as evidences of this Glacial influence seem to be reported from all parts of the globe. As the theory of a warmer climate having existed in primeval times and that the Earth is and has been for ages cooling off hardly leaves a place for a universal period of Glaciers.