151 Okur 1932 Alturas Lake, 7000 ft., Blaine Co., Idaho. July 11, 1932. forest of Douglas Fir was to be found next to the sage-brush on the N-facing slope of the canyon through which the river runs. Reaching this point we decided to turn back and go to Alturas Lake in the Sawtooth Range. The lack of Yellow Pine, and its apparent complete replacement by Douglas Fir in this region is quite conspicuous. The Sawtooths, i.e., the main body of the mountain mass, rise up as rugged snowcapped spires after going 5 miles south of Cape Horn. Alturas Lake is situated on the east-central side of the range at an elevation of 7000 feet. On the south-facing slope above the lake there is a great deal of sage growing. On the north-facing slope of the ridge on the S side of the lake there is a growth of fir (Douglas) lower down and Lodgepole Pine higher up. A stream flows into the upper end of the lake and has a considerable growth of willows and alders along its banks. On each side of the stream there are swampy areas, ledge covered, with willows growing in patches. These latter form a suitable shelter for white-crowned Sparrows and Lincoln's Sparrows. Picked up a cottontail skull (S. gestallii) from an animal (juv.) that had been run over 2 mi SE of Cape Horn. Spent the afternoon skinning Conies taken yesterday at the last camp. Placed out 25 mousetraps in swampy meadow this f.m.