VOLUME 2 2, NO. 4, APRIL 1950 567 cupric ions. Methods were also found whereby these metals could be determined in the presence of the other ions. A future pubiica-(ion will discuss the industrial applications of this reagent.

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With the expansion of irrigated agriculture throughout the world, much land now saline or alkaline must be reclaimed. Reported herein are the results of both flushing and leaching salts from a saline-alkali soil in the Coachella Valley of California's Colorado Desert. The paper presents a quantitative evaluation of the effectiveness of removing a salt crust by flushing, and it compares the removal of the usual salts with the re moval of a high concentration of boron. Flushing as a reclamation procedure was found to be ineffective. Leaching was found to remove 80 per cent of the initially high salts with the application of one foot of water for each foot depth of soil considered. Equal leaching of boron required three times as much water.