Quest 1948 Journal 128 June 19 San Jorge, 5 ft., 23°44'N, 112°07'W, Baja California above the high tide marks. A region of "Mangl Dulce" occurs in back of the mangroves, and a small, dense, thick-leafed bush from 8 inches to two feet high (Tumble-like weed: Lamb) occurs in flat areas between the small sand cliffs and the sand region. Dr. Benson and I fished this evening off the beach next to camp and in about 1½ hours caught several Catfish, a very small Hammer-head Shark, a shovel-nosed Shark and several other kinds of scaled fish. Clams occur in abundance in the mud and cystica of approx. 3 in diameter are common on the Mangrove roots. June 20 Same Location. Minimum temperature last night was 62°F, maximum today was 76°. The weather has been clear with an ocean breeze coming up at about 11 AM yesterday and today. 50 Museum special traps baited with walnut and set along this mangrove strip north of camp caught 19 Peromyscus maniculatus last night. Traps were set under the Mangroves on the dead Mangrove leaves at the high-tide marks. 48 live traps set among Ocotillo and Pituais agria clumps in hard-packed sand N.E. of camp last night caught 19 Dipodomys