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Show 7a BASIS OP AMERICAN HISTORY as convincing as at first appeared. The possibilities of intrusion from the surface are numerous, and many of the implements under discussion are the same as surface forms; while subsequent examination by skilled observers, in places where objects were claimed to have been found, have usually failed to bring other specimens to light. ^ Hie result has been that most archaeologists regard the proof for glacial man in America as insufficient. 1 It must also be added that the date of other deposits in which it is generally agreed that human implements have been found, such as the gravel series of Trenton, New Jersey, has been placed by many investigators much later than was at first supposed.'\ Yet though glacial man is doubtful, and there is little positive foundation for a belief in such ancient occupation of America as that of palaeolithic man in Europe, the continent has certainly been inhabited for a very long period, probably for thousands of years^ Such remains as some of those in Minnesota,* and a recently discovered skull in Kansas/ prove a very respectable antiquity. 1 Mercer, Researches upon the Antiquity of Man in the Delaware Valley, 20- 33; Holmes, " Traces of Glacial Man in Ohio" ( Journal of Geology, I., 147- 163.) ' General discussion of the Trenton gravels, Am. Assoc. Advancement of Science, Proceedings ( 1897), 344- 390. • Brower, Memoirs of Exploration in the Basin of the Missis-sippi, V. 4Holmes, " Fossil Human Remains Pound Near Lansing, Kansas" ( American Anthropologist, N. S., IV., 743- 752); Chamberlin, " The Geologic Relations of the Human Relics of Lansing, Kansas" ( Journal of Geology, X., 745- 779). |