Erickson 1934 Tule Tank 14. all medium sized; Ground loose rock from pebble size to huge boulders; plants palo verde, yucca, and two stout stemmed plants one red barked, specimens saved by Miss Alexander, also some burrow weed. Bat seen briefly at dusk around ironwood tree, then flew out toward plain to south; lost. Jan. 20. Caught one Peromyscus lepidus, one Peromyscus eremicus, and four Peromyscus crinitus, one of last caught by nose not saved. Spent morning hunting birds in canyon and out on plain; took a Myiarchus cinerascens, a sparrow, identity not positive, a Salignictes obsolitus and a Polioptila cerulea obscura; the last two badly shot up; not saved. No bird located on the mesa. Heard raven in afternoon on range east of camp (at mouth of canyon with tank), but it stood near for a few minutes only. Put out 30 medium sized traps along SW facing slope of tank canyon, starting at base mouth and ending near tank; most of traps about 25-30 ft above floor of canyon, widely spaced groups at locations where rat sign was found. Found a Shiret dead on rocks as set traps. Jan. 21. From 30 traps set took one Peromyscus lepidus, four Peromyscus eremicus, partly eaten, and two Peromyscus crinitus. One trap in rat run lost.