Feathers. Jan. 22, 1934. 26. Colorado R., 31 mi. N., 2 1/2 mi. W. Camp Mohave, Mohave Co., Arizona. (cont.) When we became stopped by the sand a second time, about two miles from the ferry, Dr. Benson decided to pitch camp at the spot. We accordingly unloaded the equipment, erected the tent, and went to look at beaver workings, which Dr. Benson had located when we were in camp across the river. The beaver "sign" was plentiful, and in some instances, recent. The bank at this place was some five feet high, the river current swift and deep, and willow saplings grew in a thicket, close the to the river's edge. At places in the steep bank, it could be plainly seen where beaver had dragged cuttings and slid them into the water. The cut stumps were up to three inches in diameter. From manner in which the cutting had progressed from the downstream end of the thicket to the upper, it seemed as tho the beaver den must be below the thicket. Appearances indicated the den might be in under the roots of a mesquite which projected over the edge of the bank. The cutting of the willows had been done systematically; for the downstream end of the thicket had been completely crazed, while the upper end was entirely un- touched. I set two number four traps at side