W.B. Davis 1935. 427, Dayman, Clark Co., Idaho, June 27. I believe that many of the old have desiccated. At the evening - I had hunted from about 3:00 - 7:30 P.M. - I drove to Pioneer, retracing my path on the highway as far as where it crosses the old river bed, and then turning SW and following the south bank of the now dry bed to the railroad. Along the course of the bed are several old cottonwood trees, many of which are now dead from lack of water. The whole area is covered with a mixture of short Artflex and Artemisia. The soil is very gravelly and from indications it would require a considerable amount of water to grow crops. It is this type of soil, I believe, that made it possible for the river to 'sink' into the ground. There is also a considerable amount of lava in the form of outcroppings and drift. Sand is found in some areas. I arrived at Pioneer just before dark - about 8:30 - and set out 20.