No part of his extraordinary theory of the deluge was more revolutionary, or scientifically incredible, than this idea that the continents would gradually emerge again, owing to internal stresses set up in the crust of the earth.
This, he anticipated, would be caused by the tremendous pressure of the water, which must be ten or twelve miles deep over the greatest depressions of the old ocean-bottoms. He expected that geological movements would attend the intrusion of the water into subterranean cavities and into the heated magma under volcanic regions.
He often debated the question with the savants aboard the Ark, and, despite their incredulity, he persisted in his opinion. He could not be shaken, either, in his belief that the first land to emerge would be the Himalayas, the Pamirs, and the plateau of Tibet.
"We may have to wait some years before any considerable area is exposed," he admitted, "but it must not be forgotten that what land does first appear above the water will lie at the existing sea-level, and will have an oceanic climate, suitable for the rapid development of plants.
"We have aboard all things needed for quick cultivation, and in one season we could begin to raise crops."
"But at first," said Professor Jeremiah Moses, "only mountain tops will emerge, and how can you expect to cultivate them?"
"There is every probability," replied Cosmo, "that even the rocks of a mountain will be sufficiently friable after their submergence to be readily reduced to the state of soil, especially with the aid of the chemical agents which I have brought along, and I have no fear that I could not, in a few weeks, make even the top of Everest fertile.
"I anticipate, in fact, that it will be on that very summit that we shall begin the re-establishment of the race. Then, as the plateaus below come to the surface, we can gradually descend and enlarge the field of our operations."
"Suppose Everest should be turned into a volcano?"
"That cannot happen," said Cosmo. "A volcano is built up by the extrusion of lava and cinders from below, and these cannot break forth at the top of a mountain already formed, especially when that mountain has no volcanic chimney and no crater, and Everest had neither."