Peterson 1935 july 20. Catch consisted of 12 Peromyscus truei and 4 Peromyscus m. sonorensis. Animals gutted, weighed + sexed; wrapped in oil paper + wet gummy sack, out to hunt chipmunks + other small game up slope of Pilot Peak. Several chipmunks seen, but too far away to be obtained with shotgun. No coyotes seen on rock slides. Ascent up to about 7800 ft. without any game shot. Descent with Dr. Hall to camp. Skins prepared of 8 Peromyscus truei and skull only of two. One Peromyscus truei found to have an embryo in process of resorption and apparently 3 undischarged placentas. Camp at base of mountain in upper Sonoran zone with Aritenesia tridentatus and juniper, at about 7500 ft. Transition zone appeared with mountain mahogany and Pinon pine. Canadian zone, according to Mr. Russell + Mr. Richardson had Tsuga mertensiana and Pinus flexilis. Some sprawling junipers on Peak acc. Russell. Several springs toward base of peak - source of water for stock + ranch below. Pipe tapped for washing-purpose water. Pack up + leave for Coble about 4:45 P.M. Arrive at Coble about 6 P.M. Proceeded little beyond Coble where camp pitched for the night. 70 mouse traps set on roadside near Coble on