Explorations made of the Atlantic [39]
We once had a hemisphere of land, and one of water [40]
The climate was tropical, as attested by shells, coral, coal, and saurians [41]
Also by tropical animals, flowers, and tropical vegetation [42]
Water raised the mountains [45]
Sea bottom seen there [46]
Rise and depressions of earth. Cause of glacial epoch [48]
Such a world physically adapted to man [50]
The accumulating evidence that our earth is essentially a ball of water [53]