J. Rodgers 132 2mi.ESE Rock Springs, 4700 ft., Hanfai Vol. San Bernardino Co., Calif. June 6, 1938 Cataclaw knob which partially covered a large boulder at the base of a pinto- covered north facing slope. I got back to camp by 11:30, and by 2:30 we were packed and on our way to the next collection locality. We went to Cima, and then back up to Cedar Canyon, where we returned south on the Eaux road. We went down Black Canyon and toward Essex. Colton Well, 3200 ft., Providence Mts., San Bernardino Co., Calif. June 7, 1938 Colton Well is in a narrow sandy wash in the low eroded tip of a south projecting spur of the Providence mountains. The major part of the spur is flat topped (lava capped) and many of the side projections of the spur are lava capped, but the last mile or two of the tip has lost its lava cap, and is eroded to rocky topped hills. Colton Well itself is 27 feet deep and has three feet of water in it at this time. There is an old pump and gas engine at the top, a metal water tank nearby, and a concrete tank in a railroad tie and pipe small about 50 feet down wash. Looking west and northwest from here we see the very rugged Providence Mts. to the