P. PEARSON 1952 April 11 Collected tenagyps during along rock in morning, stopped for lunch at river by Chalifateos River was warm but despite sun a cold wind was blowing. Then drove to our living camp where put out two traps. Temps at 4:30, 2am still up, 44; at 5:00, 36; at 9, 32. Went up to the ruin rock at 5:00, when I had seen rat tracks in snow and put out about 11 steel traps. Then waited for dark and joblighted but saw nothing. Might clear weather. April 12 Light filmy clouds in a.m. and most of day. Tenagyps traps and caught upon climbing, sun all day. Put out more steel traps along ruin rock in 6:00 a.m. 30; 10 45; 11:15 46; 1:30 48 3:30 - 44; 4:30 - 40 > sundown 5:00 - 36 evening and again joblighted, but saw nothing. Shot 3 manibos in a.m. 20; and (recently-partnered) April 13 Temps 23 at 6 a.m., no traps touched. More trapping in a.m., then drove down to the Pampa de Titire and put out two traps. Caught more during mid-day but 5 at about 3:30. Terrain is sloping sandy desert with total rygdom, bunch of fleatare, and a tiny lunch grass. Put out about 20 m.s. and Anita put out a line. April 14 Temps 20 at 6 a.m., only 1 arvicola in my list. Anita's line with 2 arvicolas, 1 lellipachin, 4 Elgomodonta (2 of them igus), and 1 sollemnis?. Some of the ardivers immature. Hunted twice in [illegible] morning & planned. Traps not as successful as yesterday. Left at 4 p.m. and drove to Capazo where at dusk I put some two traps in the colony where we shot one before. April 15 One two in my traps. Anita sighted them about 8 a.m., got 2.