Hooper, 1938 Berkeley, Alameda Co., Calif. June 28, Left camp on Stewart's place yester- day about 2 and drove along coast highway #1 thru Stinson Beach, to Manzanita where we rented a tent house in an auto court for the night. I set out 50 traps in Salinas in the marshes opposite Lakesport where I set before. Because of the extremely light tide I caught no manimals - only 1 song sparrow, the traps were floating in many sets. I twenty-seven traps set in re- gress near the edge of the marsh at the mouth of Elk Valley yielded nothing. I drove up Elk Valley to within 1/2 mi. of its mouth on the ocean side. The entire valley is grazed by dairy cattle; nowhere did I see any likely Zapus country. At the sea coast mouth (Tennessoe Cove) there appear- ed (from 1/2 mi. away) to be a marshy area grown to sedges. However this, too, contained grazing cattle. This morning, after gathering our mammoth catches (!!) we drove over Richmond-San Rafael Ferry. Distance for trip = 490 mi.