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Blood Groups among Primitive Peoples THE British Association Research Committee on Blood Groups among Primitive Peoples, of which Prof. H. J. Fleure is chairman, reported at the Dundee meeting on its work during the year 1938–39. Results obtained by Dr. F. W. Vint in Nairobi, Kenya, in 1936, which it has not been possible to carry further, are recorded as follows: Individuals tested, 121 (Bantu, 73; half-Hamites, 5; Nilote, 33; mixed, 10); percentages: O, 42·1; A, 22·3; B, 30·6; AB, 5. In the Naga Hills, Assam, from observations in 1936–37, 407 tests were made in all. Of these 140 were of Angamis, Lhotas, Rengmas, and Semas, known historically to be of similar stock. They gave the percentages, Angamis, O, 35·4, A, 34·4; B, 25·0; AB, 5·2; while all four tribes together gave, 0,40; A, 33·6; B, 22·1; AB, 4·3. The percentages for the four tribes together do not differ appreciably from those for the Angami alone. Larger numbers are required to determine whether Semas, Lhotas and Rengmas show significant differences. Three other tribes were tested as follows: Konyaks (127): O, 45·7; A, 40·2; B, 10·2; AB, 3·9; Aos (57): O, 47·4; A, 22·8; B, 22·8; AB, 7·0; Thado Kuki (83): O, 19·3; A, 30·1; B, 32·5; AB, 18·1. These results accord with the view of Mr. J. P. Mills that the Konyaks are more primitive than the Angami-Rengma, that the Konyak and Aos have much more in common, and that the Thado Kuki are an entirely different race. The Konyak and Aos may be regarded as the most primitive in blood grouping. In Travancore 171 Kannikars, as well as Pulayas and other tribes, have been tested with results markedly different from the general population of Trivandrum. Anthropometrie measurements and blood group tests have been carried out on 1,000 Egyptians of the Sharqiya Province, Upper Egypt; and 300 tests have been made in Co. Antrim, Northern Ireland, on individuals with a residential history in the district of three generations, to show whether local differences can arise in a small isolated population.