Davis, 1948, Berkeley, Alameda Co., Calif., to Naval Ordnance Testing Station, China Lake, Dyeo Co., Calif. Dec. 17, 1948 Left Berkeley 5: 40 a.m. Drove to Bakersfield, then over Walker Pass to Inyo town. Took four tires several times on way from Bakersfield, the first noted a few miles west of Holo Hot Springs. On arrival at NOTS, China Lake, we were passed through main gate and taken to residence of Dr. William K. Fish, where we spent the night. Mountain Springs Canyon, Argus Dist., Dyeo Co., Calif. Dec. 18, 1948 Dr. Fish, Betty and I left reservation at 6:30 a.m. for Mountain Springs Canyon, Dr. Fish guiding. He recommended that we approach the canyon from the upper end, and we took the road to Junction Ranch, turning off to the upper end of the canyon. Snow appeared well before the top of the grade, and within two miles of the upper end of the canyon, there was a blanket about 3" deep, and further driving was impossible. The temperature must have been well below free- zing. We returned to the turnoff to the lower end of the canyon, and drove to about 4000 ft. Salt sp. patches could be seen from the car. We hiked up the canyon to about 4800 ft., to a