sinkers had been picked up around Kootenay Lake and also along the Arrow Lakes of the Columbia River on the borders of the Shushwap and Lake divisions of the Colville tribe. [68] Teit, (a), Fig. 234. [Illustration: Fig. 15. Sinker, a Grooved Boulder bearing a Design in Intaglio. From Priest Rapids. 1/2 nat. size. (Drawn from photograph 44536, 9-2. Original in the collection of Mr. Mires.)] [Illustration: Fig. 16. Sinker, a Perforated Boulder. From Priest Rapids. 1/2 nat. size. (Drawn from photograph 44535, 9-1. Original in the collection of Mr. Mires.)] In the Nez Perce region[69] to the east, no sinkers were used with fish lines, but roughly grooved river boulders were employed as net sinkers.[70] A grooved sinker has been found at Comox, grooved stones which may have been used as sinkers occur at Saanich, on the west coast of Washington and the lower Columbia. On the coast of Washington some of them have a second groove at right angles to the first which in some cases extends only half way around; that is, from the first groove over one end to meet the groove on the opposite side. One of the specimens found at Saanich was of this general type. Perforated specimens have been found in the Fraser Delta,[71] at Comox,[72] at Saanich,[72] Point Gray,[72] Marietta,[72] at Gray's Harbor and in the Lower Columbia Valley. On the whole, however, sinkers are much more numerous in the Yakima region than on the Coast. The fish bones which were found, as mentioned under resources, tend to corroborate the theory that the notched, grooved and perforated pebbles were net sinkers and that the bone barbs were for harpoons used in fishing. [69] Spinden, p. 210. [70] Spinden, pp. 188 and 211. [71] Smith, (a), Fig. 22. [72] Smith, (b), p. 311, 338, 362, 369.