J.P. Pearson 1947 Journal Swager Canyon, 8200 ft., Linewater Mtns., Mono Co., Calf. July 20 Left Berkeley in Power Wagon, 6 AM, arrived Swager Canyon about 4:30 P.M. Benson shot a Eutamias at Leanitt Meadows on the way down the east face of the Sierras. Put out 35 Museum specials along stream in grass (6 yd. intervals), and 32 Benson line traps-- all baited with walnuts. Put out ca. 5 P.M. Checked the line traps at 9 PM and they contained 1 live Zorex palustris, 1 live Peromyscus, and 1 dead Zorex sp. July 21 Coyotes howled ca. 4 AM. Snap traps held about 5 long-tailed Microtus and 4 Peromyscus, and one Zorex sp. One more P. leucinus in line traps. Z. palustris was dead in cage. Skinned til 10:30 AM, then put out more traps after muleba palabra re. sawing of data from discarded specimens. Put 95 traps (Benson, line) at 12:30 PM on hill behind camp as follows: 19 in bunch grass. 19 in artensia 44 in mabogang 5 in tulna {baited with seed. 19 more in mabogang. 16 more in artensia also put 49 museum specials along the stream at the western edge of the valley; 3:30 PM., walnut bait. While setting this line I scared up a Zapus who, in trying to escape, jumped into stream and swam across ferhly, presumably by same jumping motions as on land. Caught him by hand.