Mr. Wallace ascribes the present isolation of the islands, and their separation from the adjoining continents, to the submergence of the channels between them caused by the abstraction of matter thrown out by the numerous volcanoes. Looking, however, at the fact that at the time when these islands were probably connected with the continents of Asia on the one side and Australasia on the other, namely, at the close of the pliocene period, England was connected with the continent; Malta, as shown by its fossil elephants, with Africa; the West Indies with Yucatan and Venezuela; it seems to me more probable that the cause was not a local one, but a general lowering of the waters of the ocean all over the world to at least one thousand feet, produced by the prodigious quantity of water locked up in the frozen masses that covered a great part of both hemispheres. The wide diffusion of the Malayan dialects over the Pacific, reaching as far as the Sandwich Islands, shows the great extension of that race in former times. On numerous islands in Polynesia there are cyclopean ruins utterly out of keeping with their present size and population. Who can look at the pictures of little Easter Island, with its gigantic images standing up in unworshipped solitude, without feeling that that insignificant islet could never have supported the race that reared the monuments. But if that and other islands were once hills overlooking peopled lowlands, the sense of incongruity vanishes. We see the images, not gazing gloomily over the ocean that narrowly circles them in, but proudly looking across wide plains peopled by their worshippers, who from their villages and fields behold the gods they adore, and implore their protection and support. Was the fabled Atlantis really a myth, or was it that great continent in the Atlantic laid bare by the lowering of the ocean, on which the present West Indian Islands were mountains, rising high above the level and fertile plains that are now covered by the sea? Obscurely the accounts of it have come down to us from the dim past, but there is a remarkable coincidence between the traditions that have been handed down on the two sides of the Atlantic.