Thacker 1960 Journal p. 43 Dec. 10 Berkeley to Upper Pierce Ranch (McClures), 300+ ft. Marin Co., CA. At 7:30 AM I left to the Zool. 135 class - D. Martens, H. McInnis and O. Bequist for Dr. Benson's place south (1 mi.) of Inverness, Marin Co. We arrived in the rain about 9:15. We checked traps he had set around his place taking Sorex townbridgei, Peromyscus maniculatus and Reithrodontomy megalois. Then we drove W over the ridge and down near the head of Drake's Bay to check some traps he had put out for Aplodontia yesterday. These were empty produced one mtn. beaver, one Peromyscus maniculatus and a Neotoma fuscipes. From here we drove N toward the McClure's Ranch (Upper Pierce of recent top maps - 7 1/2' series) Here Dr. Benson had arranged for us to stay in some of the ranch buildings. Afternoon lunch we walked in down to the beach on the Bay side. We noted racoon scat with crab shells in it along the rocks south of the beach. Late in the afternoon Gerald Martens and I drove back along the road for about a mile and set traps in the swales in a valley on the ocean side. I set almost 100 traps in big bunches of grass. The ground was very wet and frequently I sank almost knee deep in mud. Here the slopes are all covered & abandoned and there are a few larger small trees in the bottom of the canyons.