spiders, 1 Pseudoscopion, and 2 small Thyasaurans. Several collections of rather spherical empty beetle shells. A few small shells strewn about the general area. No geckos or lizards. I think the restriction is where the rocks are and there are more on the study area. Carol found a Gecko-like lizard out in the open about 50 m west of the grid. Yesterday's gecko was also about 50 m west; The area of Tillandsia spanned into 225 m² was 372,090 cm² = 16% coverage. The largest row was 700 x 50 cm. Root temp 72°, wet-dry 68°-59°. 1 P.M. open flat grid in sun, soil 3" deep 28°, 5" 26". Under large Tillandsia 3" 21°. The road dust is moving north leaving a trail of dead and drying Tillandsias. Oct. 11 Done fog gettled during night but AM was clear. A little dew cliftes off of car. A foth bed offered me set cautiously and stolen the hard from the roof; a foth scentod about 3 of the big shiny aluminum thermoses! Also 20 yds from tent, Early morning was overcast in Tacna. No trofs on grid touched. One in the rocky gulley had a mouse tail - Mus I believe. a gecko caught by Carol weighed 2 g. at 6:30 a.m. shade ground temp. 4" deep 18°, 5" deep 19°, 3" deep 15°, 2"-13° Under Tillandsia 5" deep 16°, 3" deep 16°. Under good gecko-like rocks (this): 13°, 12° in sun a flat rock in sun at 7:45 with gecko 14°. This location shall be known as 4 miles north Tacna, 3360 ft. The sterility of the study area proper with all its Tillandsias due to contrasted compared to rocks and gulley nearby is presence of rocks. The