Crackson 1934 Chrenburg Barker, 440 ft., Yuma Co., Ariz. 27 tracks followed 200 yds. or more to rocky ground where all sign lost. Other settings undisturbed. Moved from Chrenburg to Barker via Quartzite and Bouse in afternoon. Spent night at hotel in Barker. Feb. 22. Spent morning on river bottom land south of Barker inquiring for and looking for places to trap sagmodon and gophers. Region has been protected from overflow flooding by levee, and is ditched for irrigation. Only one stand of tules found, these standing in and surrounded by water; one edge trampled dry cattle under mesquite other few few of arrowweed thin cultivated field. All inquiries brought same response, few remaining places that tules could grow had been recently burned off in preparation for a drain ditch the government is putting in. Made seven gopher settings in salt grass fields 2 mi. south of Barker. Established camp, 5 mi. east of Parker on mesa, at N. 10 base of Black Peak, a volcanic peak, with sand dunes east and south of it and extending some distance along north side. Camp on rock strewn mesa; vegetation creosote, burrow weed, galletia, and along small washes palo verde. Looked at gopher settings late in afternoon, 6 gophers taken, 7th setting filled in reset; three other sets made. Feb. 23. Rained from 8-10 and sprinkled several times later in the day. Moistened ground about two inches down. Spent first part of afternoon looking for places suitable for sagmodon. One drain ditch found