E.L. Karlelin 1954 Bufo boreas (4) April 9 Stoneman Meadow, 4000 ft., Yosemite Valley, Yosemite National Park Calij. 11:30 A.M. Norm Werkenheim and I set out the maximum-minimum recording thermometer at Pond A (see map) where I collected 5 adult males last night. This pond crescent-shaped 19 yards long with a maxi- mum width of 12 feet. It is a depression in the meadow itself with the grassy hilllocks on its sides 3-4 feet above the level of the pond. This is probably a snow pool possibly fed by endwater springs. No moving rivulets enter or leave it. Maximum water depth 4 inches. Mounds of grasses break up the surface of the pool, rising up to 15" above the water surface. The slope of the edge is steeper on the west side where I found the adult male stood approach- ing the pool the slope is about 3 1/2 feet in 4 1/2 feet. The slope is more gradual at other points. Brown dead grasses lying flat or in clumps dominate the meadow but new green grasses (2-3" high) are coming up. The pool has still green blades here and there of what may be annual grasses. (=sedge) the thermometer is located 3 feet from water's edge 6" above present surface of water. It faces N. and is enclosed 3 sides by a cut down apple box.