Thresher 1960 Journal #33 July 23 cont'd Yellow Creek Valley, Lassen Co., Calif. (5080±ft.), out a kangaroo rat; ground squirrel burrows and badger workings were common. Returned to our camp at the Murren Ranch, skinned until mid- afternoon. Then ate a bit of lunch, set two mole traps, put out 4 more gopher sets and picked up two more gophers. Returned to camp, bathed, skinned my gophers, ate dinner, Mr. Murren and his son-in- law a Davis graduate drove up to see how we were coming along. Mr. Murren seems to have forgiven us for ripping up his field and getting him up to haulies out last Tuesday. We talked for a while then finished supper, days work and turned in about 10:45 PM. July 24 Yellow Creek Valley to Butler Spr., Half Flat, 5650, T3N, R6E Up about 6AM. after breakfast I pulled in my gopher traps and mole traps, I had one mole and 4 more T. monticola. By 11AM we had some of the nights catch skinned and sent were packed up and underway We stopped at the Murren Ranch on the way out and were shown a great roosting place. In the barn a couple of bundles of burlap sacks had been hung up from the rafters. There were perhaps 20 bats roosting in one bundle and maybe 10 in a second. We separated 6 but let four young go. They proved to be Myotis yumanensis. We returned to Susanville, stopped for lunch and groceries and were en route by 2:30 PM. Drove W on Rt. 36, took the turnoff for Silver Lake. Drove past