L. Karlstrom 1954 Buffo boreus (20) may 1 1/2 mi. S Gt. Center, 4000 ft., Yosemite Valley, Merced Co., Caly. 9:45 A.M. Some frost on the grass surface in shade even at this hour. Overall appearance of the meadow is predominantly green with new grass (lots of sedge) 6-15" tall (av. 8-9") A close look at any one meadow area (about 10 ft. square) shows that the surface area is still 60% covered with dead matted grasses. Fruiting bodies on the sedges are out and shedding. Valley deciduous tree growth shows a good spurt of new yellow-green foliage on oaks. Black cottonwoods appear fully newly-leafed out. Blackberry bushes to 10' height, new buds 1/2" long willow-like bushes in study site area but no new leaves as yet. Dried reeds (5) and covering of congoles present terminal twigs of these bushes. Soil temp at 10:15 A.M. (D.S.T.) surface 8.0 C. 6" - 7.5 C. 12" - 8.5 C. 18 - 8.9 C, 24" - 8.2 C. Few Wyga calling pools SE of site. Many red-winged blackbirds active in area, also corn woodpecker in oaks to E. Psychometer reading 11:00 A.M. (D.S.T.) Initial 54 - after WB - 46' DB - 54