1. With respect to the 173 house sites mentioned in the paragraph above Kroeber states on the same page (1925, p. 18): "Recent counts of houses and house pits _recollected as inhabited_, total over 170 for the Rekwoi-Kepel stretch." (Emphasis mine.) In other words the data furnished by Kroeber's informants and presented in the table on page 18 were not based upon the actual or presumptive number of pits but on inhabited houses. It is this total which conforms so closely to the count made by the census-takers of 1852 and also that shown on Waterman's list. By Kroeber's own admission therefore a one-third reduction for these Yurok towns would not only be unnecessary but would lead to entirely false conclusions. 2. Kroeber is not clear whether he means house pits existing on the ground in 1910 or pits which _might_ have been visible had there been no destruction due to floods or mining subsequent to 1850. He states that, if the latter are included, then the number of house sites "may be set at" 200 or more. But by implication he recommends that the observed number be reduced by one-third. Now on Waterman's maps the author shows for 19 towns the actual or approximate location of the pits visible or otherwise known in the year 1909. There are 210 of these. At the same time the inhabited houses recollected by informants for the same towns, as revised by him in his list on page 206, is 192. Hence the true ratio of reduction is not one-third, or 1 in 3, but 18 in 210, or 1 in 11.7. It is of course possible to _assume_ that 78 pits were destroyed between 1850 and 1909 so that the total number was 288 instead of 210. Then, if the one-third reduction is applied, the result is 192 houses. Such an arithmetical exercise constitutes merely arguing in a circle. On the basis of Waterman's concrete data it would appear reasonable to make a 10 per cent reduction in those localities where information concerning number of houses is derived exclusively from pits remaining long after habitation has ceased.