. Bulletin. Forests and forestry -- United States. Flu. 50.—Monthly cvapuratiou iu tliu liflds (upper curve) aud woods (lower curve). which is affected by tlie cover of the forest in lessening evaporation. The evaporation and its saving by the woods are botli greatest in IMay and June and they decrease symmetrically on each side of these months. The amount in the winter months is very sm;ill, and it is, moreover, somewhat uncertain, as it is difficult to make the observations at that. P'lO. 51.—Percentage of evajjoratiou iu the woods as coiuparod with that iu open fields. season. The annual ev
. Bulletin. Forests and forestry -- United States. Flu. 50.—Monthly cvapuratiou iu tliu liflds (upper curve) aud woods (lower curve). which is affected by tlie cover of the forest in lessening evaporation. The evaporation and its saving by the woods are botli greatest in IMay and June and they decrease symmetrically on each side of these months. The amount in the winter months is very sm;ill, and it is, moreover, somewhat uncertain, as it is difficult to make the observations at that. P'lO. 51.—Percentage of evajjoratiou iu the woods as coiuparod with that iu open fields. season. The annual evai)oration in the A\oods is 44 per cent of that in the fields. Fig. 5L represents the percentage for the different months of the year. The upper straight line stands for 100 per cent, or the evaporation in the fields during the year, and the curve below repre- sents the percentage in the woods. The shaded space is the percentage 100. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Division of Forestry. Washington : G. P. O.
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