Field Trips. Oct 31 - Nov. 1. 1931 Schutt's mine. Took 3 boys and drove to the cabin by way of North Pocatello creek. We trapped gophers, for the most part. Seven specimens were taken. Workings were thickest and most of the specimens were taken on a gravelly ridge over grown with sage brush, with no fir tree on it. We were up on the side hill - about 200 yards from the creek bed. One pine squirrel, cat # 543, was collected and saved. Killed one hack rat in the cabin. Trapping for mice was a complete failure. The creek bottom had been overrun by grazing sheep and was eaten off and trampled until the mice had no cover. No Mt. muridae were taken where they had been rather common formerly. An attempt to plot tree