EL Karlston 1955 Ensatina eschscholtzii May 19 2 mi. NE Chinguaczin, 7050 ft., Y.N.P. Mariposa Cr., Cal. Adult found in rotted red fir log just under 4" thick bark. Chorcol temp. 10.2° C. at 10:31 A.M. Temp. of rotted wood 6.8° C. with bulbs slaved in it. The NE side of extensive meadow is now partially shaded with about 25% of sunlight filtering through canopy of towering (150') red firs. Typical Carodim zone, fairly open meadow bordering Grance Creek. Meadow winding, about 80-100 yards across and extending general SE direction for over 300 yards. Air temp. 2" above rotted log (bulbs shaded) 13.2° C. at (about 4" thick) 10:36 A.M. Tree so rotten it is almost leveled to meadow soil. Meadow half devoid of snow. What's left is only 14-16" deep (maximum) and melting fast. Running stream 30 yards SW of this spot. Over-writing Rana cuculosa tadpo in it. Meadow brown, either matted grasses or fine soil shot through with mole voords, micrato burrow casts, all fresh. Insect life abundant on dry rotted log (moisture readily squeezed from greeny wood) - centipeds, ants, beetles, millipedes. Second adult found 10:48 A.M. 40 feet from first in deeper shaded section of log 20' from NE meadow margin. 3" thick Total length of rotted log 55-100 feet. Underside of bark right on top of log. Decomposed wood and wood fragments saturated with moisture. Chorcol 5.4° C. 10:55 A.M. Substrate 5.1° C. Air (shaded deeply here) 2" above wet log 12.6° C. Animal slugghish but righted itself. 3rd between first two again under slab of bark. Chorcol 6.8° C. 11:10 A.M. Substrate 6.2° C. Air 13.1° C.