roosting places, (see Mary's notes) and picked up one yuma area in the bridge he found this afternoon. Also one yuma in house near crusher. None in tunnels. April 17, 1950 Mary's & Marilts' trips had one more of the same species Peropterus, in spite of the difference in habitat. My lie along the river held 15 Pero. (all true?). In the morning he drove east on the Forest Hill Rd. looking for bats. Found one good Tunnel - an old mine (see Mary's notes). In the afternoon Marilts + Carol + I went to Auburn to ask about bats and get some supplies. Left our names with the Biology professor at Placer College and found our high school boy who claimed he saw a few bats near a small cane a few miles north of Auburn on route 40. At dusk we went up to the crusher to watch the bats come out, with Mary's 410 + my slingshot. Saw many flying, the noisiest being Eptesicus that were night-roosting in a fairly big crack in the crusher. After no success at shooting one outside we shot into the crack and got both Eptesicus and Tadarida. More skinning upon our return to camp. April 18, 1950 Made a lost trip t the crusher and extracted a few more yuma's + 2 Tadarida while Mary loaded and released. Then we went up the road towards Placerville to look for a directors cane we heard about yesterday. The cane opens at the base of a big oak tree