Prolonged experience—ten seasons—with the peoples of Alaska and adjacent islands, supplemented by data from a truly great collection of well identified skeletal material from all times of the same region, show that caries did not occur up to the time of White man’s mixing with the natives (Eskimo, Aleut, and Indian). In Eskimos caries gradually manifested itself during the last 30 years—especially the last 15. Increase in caries, among all present contingents of native people in the Far Northwest, is due to three causes which, in order of importance, are : (a) White man’s food, especially cheap sweets, with half-baked biscuits and bread (unmodified starch) ; (b) constitutional and other debilitating diseases introduced by White man; and (c) changes in the habits and mode of living. Caries, among the natives in the Far Northwest, has not yet become as prevalent as it is in the Whites, but is increasing.
References: Ann. Rep. (46) Bur. Am. Ethnol., Wash., D. C., 1930; Am. J. Phys. Anthrop. (with H. B. Collins, Jr.), 1931-32; Proc. 1st Bien. Soc. Res. Child Devel., 1934 (Nat. Res. Council).