. Carnegie Institution of Washington publication. 80 A MONTANE RAIN-FOREST. transpiration. This was done in the following manner: The relative rates for the three plants exhibited in tables 23, 24, and 25 were grouped according to the rates of evaporation which prevailed during the same hours for which the relative rates were determined, and were grouped by increments of 1 milligram per square centimeter of water surface TABLE 29.—Averaged daily march of relative transpiration in three species, together with maximum and minimum readings. Averaged from 82 readings for Peperomia turfosa, 84 for
. Carnegie Institution of Washington publication. 80 A MONTANE RAIN-FOREST. transpiration. This was done in the following manner: The relative rates for the three plants exhibited in tables 23, 24, and 25 were grouped according to the rates of evaporation which prevailed during the same hours for which the relative rates were determined, and were grouped by increments of 1 milligram per square centimeter of water surface TABLE 29.—Averaged daily march of relative transpiration in three species, together with maximum and minimum readings. Averaged from 82 readings for Peperomia turfosa, 84 for Pilea nigrcscens, and 56 for Diplazium cettidifolium. Time of day. Peperomia turfosa. Pilea nigrescens. Diplazium celtidifolium. 8 to 9 10 11 .081 .126 .168 12 1 .096 .121 .152 2 3 .086 .110 .137 4 5 .037 .101 .116 6 7 . . .061 .076 .115 8 9 . . .044 .070 .089 Night .067 .071 .115 Maximum . . Minimum .198 .013 .213 .020 .234 .055 •.189 •.160 •.140 •.120 .100 .080 .060 .040 NIGHT 8-9 A. M. 10-11 12-1 ; 4-o 6-7 8-9 FIG. 11.—Mean daily course of relative transpiration rate for Diplazium, Pilea, and Peperomia turfosa, as averaged from graphs given in figs. 8, 9, and 10. per hour. The averaged relative rates were then plotted to evapora- tion. The resulting curves show the collective behavior of the several plants experimented upon, in the several series in which they were run. On account of the many fluctuations of the curves they were smoothed in groups of three, the average of each three readings being taken as the value of the middle one of the three. The smoothed curves are given as dotted lines in figure 12. Pilea shows a fall in relative rate which is irregular but progressive; Peperomia shows a remarkable rise,. 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 origin
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