Introduction. It is generally admitted by geologists that a differential rising of the land toward the northeast has taken place in Pleistocene times over a great breadth of North America, extending from the Canadian northwest territories to the New England states. The unequal elevation of the land has been demonstrated by Tyrrell in Manitoba, Canada, and, among others, by Chamberlin, McGee, and Leverett in the western United States, by Lawson around lake Superior, by Spencer and Taylor in Ontario, Canada, and by Gilbert. Spencer, Upham, Fairchild, and others all the way from Ohio to New England.
There is the plainest evidence that at a very recent geological period the land has been rising all around Hudson bay and in the Arctic and sub-Arctic regions of the Dominion as well as on the Atlantic coast of British North America. It would be, a priori, unreasonable to suppose that such an extensive . . .
- © 1896 Geological Society of America