“Why not? Are not all bodies subject throughout their mass to the power of universal attraction? This mass of water cannot escape the general law. And in spite of the heavy atmospheric pressure on the surface, you will see it rise like the Atlantic itself.”

At the same moment we reached the sand on the shore, and the waves were by slow degrees encroaching on the shore.

“Here is the tide rising,” I cried.

“Yes, Axel; and judging by these ridges of foam, you may observe that the sea will rise about twelve feet.”

“This is wonderful,” I said.

“No; it is quite natural.”

“You may say so, uncle; but to me it is most extraordinary, and I can hardly believe my eyes. Who would ever have imagined, under this terrestrial crust, an ocean with ebbing and flowing tides, with winds and storms?”