The ice age in North America and its bearing upon the antiquity of man5th edwith many new maps and illus., enland rewritten to incorporate the facts that bring it up to date, with chapters on Lake Agassiz and the Probable cause of glaciation . ere can be nodoubt whatever—for recent Indians made and used stone imple-ments that are palaeolithic in character—are not found inOhio, nor even in Pennsylvania west of the valley of the Sus-quehanna River. . On the other hand, if the relationship of palaeolithic manand the Eskimo is not problematical, and the latter is of Ameri-can origin, then I submit
The ice age in North America and its bearing upon the antiquity of man5th edwith many new maps and illus., enland rewritten to incorporate the facts that bring it up to date, with chapters on Lake Agassiz and the Probable cause of glaciation . ere can be nodoubt whatever—for recent Indians made and used stone imple-ments that are palaeolithic in character—are not found inOhio, nor even in Pennsylvania west of the valley of the Sus-quehanna River. . On the other hand, if the relationship of palaeolithic manand the Eskimo is not problematical, and the latter is of Ameri-can origin, then I submit that man was preglacial in America,was driven southward by the extension of the ice-sheet, andprobably voluntarily retreated with it to more northern re- 642 THE ICE AGE IN NORTH AMERICA. gions ; and, if so, then in Ohio true palaeolithic implements willsurely be found, and evidences of mans preglacial age will ulti-mately be found in the once-glaciated areas of our continent.* The expectatioD of finding evidence of preglacial manin Ohio was met not long after this. At a meeting of the Boston Society of Natural History ffor November 4, 1885, Mr. Putnam showed an implementchipped from a pebble of black flint, found by Dr. C.
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