Karlstrom 1954 Bufo boreas (50) July 21 N side of Camp 9 , 4000 ft. Yosemite Valley, Mariposa Co., Calif. - last to dry up since it once had extensive deep holes of water. Hydra toda apparently got out in time here. Day hot and muggy. July 28 50 yards NW of museum, Yosemite Valley, 4000 ft. Mariposa Co., Calif. One adult toad found 8:10 AM smashed by a car. Spot not far from SW corner of wildflower garden where a small violet flower. Day-time temperatures are in 90's at present. Toads must be restricted to night-time food- seeking and probably areas of moisture or cover, e.g. near the museum garden and watered cultivated area. At 11:15 p.m. (D.S.) I made check of Sentinel Meadow, 1/2 mi. S Gaist. Center. No toads seen this area or under lights W of Gaist. Center. Temperatures in low 70's, no breeze. Little water flowing thru the meadow.