Some of the chipped points described on p. 23 may have been used for knife points. Among these there are a number of specimens which were particularly suited for this use. The specimen shown in Fig. 6 may have served as a knife, possibly one used for ceremonial purposes although it may have been used as a spear point. These knives, being somewhat symmetrical differ from the one found at Kamloops[192] in the Thompson River region which was similar in shape to the knives used until recently by the Thompson River Indians.[193] These knives from the Thompson River region are chipped much more from one side than from the other and have curved points. The specimen shown in Fig. 3 (202-8336) has an absolutely flat base which is apparently an unworked portion of the block from which the object was chipped. It is possibly an unfinished arrow point, but its outline suggests that it is a knife point. The specimen shown in Fig. 2 is chipped from waxy red chalcedony. It has a straight end and one edge of the point is slightly more curved than the other, which together with the fact that one side is nearly flat suggests that it may have been one of those points which are considered to have been used for knives rather than for arrow or spear points. The specimen (202-8369) shown in Fig. 1 may have served either as the tip for an arrow or as a knife point, and it may be compared with the much more deeply serrated points found in the Thompson River region.[194] [192] Smith (c), p. 418, Fig. 352d. [193] Teit, (a), Figs. 125-126. [194] Smith (d), Figs. 8 to 19; (c), Figs. 332 i-j and 334. _Arrow-shaft Smoothers._ Arrow-shaft smoothers, made of coarse sandstone like those from the Thompson River region,[195] were not found by us in this area nor on the coast;[196] but one of these grooved stones was seen in the collection of Mr. E. R. McDonald at Ellensburg. It was collected by Mr. Dick Williams, of the same place, who found it on the west bank of the Columbia River, twenty miles north of Priest Rapids, Kittitas County. It is made of a salmon-colored gritstone, and is of the usual type, semi-cylindrical with a longitudinal groove on the flat side, in this case a very small groove such as might occur if it had not been much used. In the Nez Perce region to the east,[197] according to Spinden, there have been found an arrow-shaft smoother made up of two somewhat rectangular blocks of light tufa, each with a semi-cylindrical groove in one side and a soapstone object which he considers to be an arrow-shaft polisher, but I have considered this as a mat presser. [195] Smith (d), p. 145; (c), p. 419. [196] Smith (a), p. 190; (b), p. 438. [197] Spinden, p. 187, Fig. 32, Plate VII. TOOLS USED BY WOMEN. A number of implements were found which may have served for the preparation of skins and for sewing. Among these may be mentioned skin scrapers, awls, a needle, and a mat presser.