Murray 1947 Journal June 19 San Jorge, 25°44'N, 112°07'W, Baja Calif. about 20 traps actually in the swamp. There ran through a dense tangled growth about 4 feet high - somewhat shorter than much of the rest, but very difficult to move in. The surface was soft mud but largely covered with dead leaves and branches. Most of the traps were on this bottom, with 4 resting high on branches, and 2 on a thick mat of mesembryanthemum which grew across the top of some bushes. In the evening many purple martins fly south over us, passing high and rapidly in scattered groups. There have been no bats. A bright, almost full moon these nights. The weather here is very reasonable - cloudy in the morning, moderately warm during the day and small temperature range. A wind came up in the afternoon. June 20 same location The live traps had 7♂, 6♀ Perognathus arenarius, 1♂, 1♀ Dipodomys merriami, 12 Dipodomys agilis, of which released all but the agilis. In the snap traps, those set in the swamp caught considerably more; about a 40% catch. Two out of four of those in the trees had mice, and both of the ones on sabes [illegible] mesembryanthemum. The total was