"Within a distance of no more than One Hundred miles in length & twenty in width, including the Napa Valley, were five distinct nations, no one of which could converse together ... without an interpreter ... The names of these five nations were as follows--The Napa, the Ouluke, Caymus, Conahomanes & Miacamus, the last named tribe inhabited the region of the Hot Springs of that valley...." Four of these names are clear. The fifth, Ouluke, is very probably Tuluka of Barrett. Since these five groups are sharply defined by the Napa Valley and since Yount obviously was talking about that area, his size estimate was excessive. He says 100 miles by 20, whereas the valley actually is about 40 miles in length from the Bay to Mt. St. Helena and perhaps on the average 15 miles in width, from the crest of one range across to the other. With regard to numbers Yount says (1923, p. 56): "It is not yet eight years [evidently referring to the year 1843] since the above named valley swarmed with not less than eight thousand human beings, of whom there are not now [1851] left as many hundreds.... The poor remnants of all the five tribes above named now mingle & wander up and down the valley promiscuously together...." There is also an account of the destruction of the Caymus (1923, p. 59). A great many, if not most of them, were killed by being burnt in a sweathouse. The guilty parties were stated to be two Indians from San Rafael, but the motives were obscure. This event occurred some time during the later days of Yount's tenure, for, continues the manuscript, "at a period long previous to the tragical event above related, Yount embarked in erecting a small flour mill...." Although Alexander Taylor, in his Indianology, mentions some of the subtribes of the Wappo, he gives no useful population data. On the other hand, John S. Hittell talked about the Napa Valley Indians in an article in the Hesperian Magazine entitled Notes on Napa Valley (1860, p. 55). He gives the same tribes, or subtribes, as were mentioned by Yount in the manuscript edited by Camp. These were the Mayacomas, the Callajomanas, the Caymus, the Napa Indians, the Soscol, and the Ulacas. He then adds the following: Their rancherias were numerous throughout the length of the valley.... It is not known how many of these Indians there were, no census having been taken nor any careful estimate having been made, at the time, by anybody. Mr. Yount thinks their number was not less than three thousand, and possibly twice as many. It would have been an easy matter to collect a thousand warriors in those times.