"Results of a Biological Reconnaissance of Upper Mill Creek Canyon, San Bernardino Co., Cal." May 30-31, 1894. By Geo. R. & H. M. Hall, Route - Starting from Riverside at 6 A.M. we passed through E.R. and "Gages Canyon", then past Hunts and Old S. Edio to Redlands. From here we went through Mentone and then up Mill Creek. Here the pass is a mile or more broad and some 4 miles above N. joins with Potato Can. We reached Skinner's soon after noon. By "mouth of canyon" is meant when the canyon proper begins, some 5 miles above Mentone and about 4 below Skinner's. "Drury" is a mile or so up the canyon. Forcees and Jacksois are ranches in the canyon, the latter 3 mile above Skinner's. Acker's is 7 mile above S. and camp one mile above this. Falls is 2 1/2 mile above Acker's. On the home trip we went up Potato Canyon and down the yuccipa, up San Timoteo and near Moreno, then home via Bolding. It was dark after leaving Moreno, hence no moles were about there. Vegetation - Skinner's to Jacksois - 6 ft grease wood in canyon. Quies on south range and yuccas and brush on north hills. A bed of Opuntia Bernardina grows above Forcees. At Jacksois the grease wood ceases and bastard pines begin, but they are few and small. - At Acker's we reach fir and cedars and at camp fir and cedar predominates, live oak is abundant but trees were dying. Sugar pine was common near the falls. A single chinomule was seen about calf