Report of committee on the chemistry of natural waters, 1941–42

The membership of the Committee during the past year was as follows: I. A. Dennison, National Bureau of Standards; C S. Howard (Chairman), Geological Survey; C. S. Scofield, Department of Agriculture; D. G. Thompson, Geological Survey; and T. G. Thompson, University of Washington, Seattle, Washington.

SCOFIELD has continued his studies in connection with the salt balance in irrigated areas and has made progress‐reports to interested parties concerning the salt balance on the El Paso Project, Wapato Project, and the Yuma Project. These studies are of great interest to those responsible for the operation of the projects and should be of considerable value to other projects in indicating the volumes of water that may be necessary under certain conditions to insure proper drainage of the project.