Editorial | Published:

Hypothetical High Tides


IN his interesting lecture entitled “A Glimpse through the Corridors of Time,” recently published in NATURE, Prof. Ball, accepting Mr. George H. Darwin's view—that the moon was once part of the earth's mass, and after separation long revolved much nearer to us than now—estimates that when 40,000 miles distant she produced tides 216 times greater than the present, and advances the theory that these high tides have been the most powerful agents in producing changes on the earth's surface. He further presents this theory to geologists as a solution of some of their most difficult problems.

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