Merriam deviated from Kroeber very widely in his tribal names for the Athapascan groups. It is probably preferable to retain Kroeber's terminology without prejudice to Merriam simply because Kroeber's names are at the present time much the more widely accepted and used. Merriam's material pertaining to the Chilula is to be found in his manuscript entitled "Geographic Arrangement of Hwilkut Camps and Villages." He thus includes the Chilula among the Whilkut. The closest approach to a house count is reported by Kroeber (1925, p. 138) who states that six of the identified settlements showed 17, 7, 4, 2, 4, and 8 house pits respectively. This is an average of 7. Kroeber considers that the customary one-third reduction should apply and in this instance with considerable justification, since there were no living informants and the villages had not been inhabited since the 1850's. However, the careful study of the Yurok by Waterman demonstrated that the apparent ratio of contemporary house pits to former known inhabited houses was approximately 10 to 9 rather than 3 to 2. It is hence legitimate to reduce the average value of houses per village for the Chilula from 7 to 6. With 18 sites this means 108 homes. Applying the Yurok value of 7.5 persons per house instead of the probable Hupa value of 10. we get a population of 810 persons. This is somewhat greater than Kroeber's estimate of 500 to 600. _Chilula ... 800_ THE MATTOLE That portion of the Mattole living on Bear River have been studied by Nomland (1938) through information supplied by a single very old informant. The house and family relationships appear to resemble those found among the Wiyot directly to the north, although no numerical data of any kind are given. The data hitherto presented have yielded as average number of houses per village, 6.0 for the Yurok. 4.5 for the Wiyot, 6.8 for the Tolowa, and 6.0 for the Chilula. The mean of these averages is 5.8, or let us say in round numbers 6, a value which seems reasonable for those Athapascan tribes for which there are no direct counts. The Yurok family number of 7.5 also appears applicable. Merriam in his list entitled "Nekanne Tribe and Villages" mentions only three villages on Bear River but Nomland (1938) in her more careful examination of the territory found 8. Hence the population of this group may be set at 360.