Evaporation losses in irrigation and water requirements of crops . Apparatus for Lifting and Weighing Tanks. U. S. Dept. of Agr., Bui. 177, Office of Expt. Stations. Irrig. and Drain. Invest. Plate Fig. 2.—Method of Applying Water to Tanks. 9 While experimenting along this line in Utah and Montana thewriter first used single tanks sunk into the ground to the level of thesurface and afterwards the same kind of a vessel placed inside a largerbut shorter vessel which contained water. In the first the temperatureof the soil was too high and the second was inconvenient to smaller tan
Evaporation losses in irrigation and water requirements of crops . Apparatus for Lifting and Weighing Tanks. U. S. Dept. of Agr., Bui. 177, Office of Expt. Stations. Irrig. and Drain. Invest. Plate Fig. 2.—Method of Applying Water to Tanks. 9 While experimenting along this line in Utah and Montana thewriter first used single tanks sunk into the ground to the level of thesurface and afterwards the same kind of a vessel placed inside a largerbut shorter vessel which contained water. In the first the temperatureof the soil was too high and the second was inconvenient to smaller tanks used in the California Avork are shown in Plate Iand were designed by A. P. Stover. The outer tank is a plain cyl-indrical vessel made of galvanized iron, about 19 inches in diameterand 30 inches long. It was placed in the ground on a level with thesurface and moist earth tamped around it. The spacing betweenthese outer tanks was usually 4 feet. On the inner-tank, which was17 inches in diameter and 30 inches long, a flange was riveted some2| inches from the top. When the outer tank was jjarty filled withwater and the inner tank placed within it, the flange of the latterrested on the top of
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