National Geographic : 1908 Jan
z THE FIVE TOWERS USED IN THE EVAPORATION EXPERIMENTS, RENO RESERVOIR The pans may be discerned in the tower on the right. No. I is the distant tower and No.5the nearest tower, situated inan alfalfa field. The maximum evaporation was at the top of the towers in the lake, but was just asrapid atthe bottom oftower No. It in a dry field and nearly as vigorous within o1feet of the ground at tower No. 5 in the alfalfa field.