16 Apr 14 Cerro Centinela, 300+ Ft., 13 mi WSW Mexicali, Baja, Calf. the wash, mostly following the ironwood. We erected a tent for the first time, anticipating tomorrow's weather. There are many Dipodomys tracks and holes, and some kit fox tracks. Saw a night hawk of some kind. Have often seen Pepsis wasps here in the desert but can't imagine what they use for spiders. Visited my trap line at about 9 PM and turned out 4 Dipodomys merriami. Apr 15 Same location Had 7 more Dipodomys merriami in the traps, of which I kept 3, 2 S and 1 F. Also had one S Perognathus formosus. The minimum temperature last night was 78°. Dr. Benson went into town to see about the permits, and Gust to have teeth pulled. Put up the mice with blessings on the tent. It broke 100° today. Moved my trap line down the wash about a mile north. Here it is sandier over most of the extent of the traps, with the wash cut a little deeper. If anything, the vegetation looks a little greener, with more small ironwoods. There is much of what we finally identified as indigo bush. It is in bloom now with small purple flowers. The traps were