Quest 1948 Journal 27 April 20 Agua N echicera 32°30'N 116°16'W Baja Calif runs into a trough sunk in a depression for cattle, a dead steer nearby probably attesting to its potability. I set out 50 live traps in the Red Blanks and nine Schuyler traps near Neelma houses in the boulders. At the time of writing I have already caught one Peromyscus man- iculatus (9:45 P.M.). The night promises to be quite cool (56°F at 8:00 PM) and dew can be felt on the equipment. April 21 Minimum temperature last night was 32°F and it remained cool through noon. The 50 live traps contained 1♀ Dipodomys agilis (#81), 1♀ Peromyscus californicus (#82) and 1♂, 2♀ Peromyscus maniculatus (#84,85,86). Nine Schuyler traps baited with dried peaches catched 1♂ Peromyscus californicus. The Schuyler traps were set beside rat houses built in the crevices in large isolated granite boulders that dot the landscape, but no wood rats were catched. The moon was almost full last night. Birds seen at spring this morning: Haret Lark, Paleolated Warbler, Ash-throated Flycatcher, Scott Oriole, Western Tanager, Calif Jay,