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 mcgee] ANTHROPOLOGY A T COLUMBUS 761

Eskimos and the New England Indians." The communication was based on critical study of the large quantity of material in Peabody Museum ; and the measurements show considerable and consistent skeletal differences between the two groups. Somatol- ogy and psychology were conjoined in Dr Cattell's communica- tion, " New Anthropometric Methods," which was important as a suggestion — if not a demonstration — that psychology furnishes a clue leading through the interminable tangle of anthropometric data ; for the essence of structural facts resides in actions and reactions which always reveal a dominant psychic factor. Equally definite and practical, as representing a bridge between body and mind, was Dr Scripture's paper. " Inadequacy of the Present Tests for Color-Blindness, with Demonstrations of a New Test " ; while modern psychology, with its clear physical basis, was exem- plified in two other papers by the same author, " Observations on After-images and Cerebral Light " and " Observations on the Economy of Sleep." Closely related to this was the paper on •' Defective Vision of School Children," by A. G. Fried in Section I, together with "Time of Perception as a Measure of the Inten- sity of Light," and " Relations of Time and Space in Vision," by Dr Cattell in Section B.

Esthetology was gracefully represented by " The Natural Dia- tonic Scale : a Chapter of Musical History," by Charles K. Wead, and by the same author's papers in the Section of Physics on " The Musical Scales of the Arabs " and " Medieval Organ Pipes and their Bearing on the History of the Scale"; while Dr Scripture's illustrated account of " Researches in Experimental Phonetics, with Demonstration of Results," before the Section of Anthropology, was an instructive analysis of musical factors.

Technology was represented only in its prehistoric aspects. A valuable contribution to American archeology was made in the paper on "The Aboriginal Quarries and Shops at Mill Creek, Miami County, Illinois," by Dr W. A. Phillips, which was illus- trated by maps and diagrams, and by numerous specimens of

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