E.L. Kadstrom 1954 Buffy Loreau (40) June 14 Devil's Meadow, Yosemite Valley, Mariposa Co., Calif. 11:35 P.M. I walked along under street lamps lining walkway along road leading NE into Court Center. Then I cut through fern area SW of Ranger's Club. No toads. Ferns and grasses slightly damp with dew but ground otherwise quite dry. June 15 Conversation with Assistant Naturalist Norm Wikenheim. He reports seeing adult toads around the employee's vegetable garden over by the residence area. Never more than one or two at a time, however. June 21 Conversation with Chris Hauck, Sanitation Officer, Yosemite Valley. Stove oil only used with no additives. Order from Washington early 1940's that no DDT be used (last year DDT used in area to control needle miner). Stove oil used straight and sprayed from 5-gallon tanks. Crude oil had been used until sometime 1930's (1935?) when it was objected to as being unsightly. Just enough to cover food surface. Attempt to keep it off grass. This year at Sentinel Meadow some got on grass. Oiling attempted only around valley area of human concentration. At times can get down as far as Bridalveil Meadow. 4-5 species mosquito in valley. Hauck has report on them. Devil's Meadow has been oiled, although I failed