On his detailed maps Waterman shows the location of the houses in 19 villages. Presumably he checked these houses carefully with informants, for in many instances he appends the house names, although as a rule only the pits remained when he saw the sites. There are in all 210 houses, whereas in his list on page 206 for the same towns he gives 192 houses. The total population projected from the maps would then be 3,380. In a similar manner Waterman's list may be compared with Kroeber's list from informants and from the 1852 census. For the pertinent towns the numbers are: Waterman, 163 houses; Kroeber's informants, 154; the 1852 census 141. Projecting to the full list in table 2 (p. 91, herein) the population values are respectively 2,918 and 2,671. Of all the extrapolations the most significant is that from the 1852 census for it demonstrates that _at that date_ the Yurok population could not have fallen far short of 2,500, a figure set by Kroeber as the absolute maximum for _aboriginal times_. In 1852 the tribe had already suffered materially from the disturbance caused by white settlement and hence must not have represented the full pre-settlement value. The average of all five estimates is 3,124. Kroeber states unequivocally that he cannot concede to the Yurok a population greater than 2,500. Yet the best ethnographic data we possess, much of it assembled by Kroeber himself, indicate a population of 3,100 to 3,200. The key to the controversy seems to lie in Kroeber's decision that house sites and pits must be reduced by a factor of one-third in order to compute population. His conclusions are summed up in the following paragraph (1925, p. 18): The Yurok recognize that a village normally contained more named house sites than inhabited houses. Families died out, consolidated, or moved away. The pit of their dwelling remained and its name would also survive for a generation or two. If allowance is made for parts of villages washed out by floods and possibly by mining, or dwellings already abandoned when the Americans came and totally forgotten 60 years later, the number of houses sites on these 30 miles of river may be set at 200 or more in place of 173. In other words there were _two houses to each three recognized house sites_ among the Yurok in native times. Let us now consider the following points.