. The cotton plant in Egypt, studies in physiology and genetics. Cotton; Cotton. 46 THE COTTON PLANT IN EGYPT chap. given consistent results, four of which have been plotted in Fig. 40. They show that transpiration is practically in abeyance at night, slow in the early morning. By 9 in sunshine it has reached a maximum which is maintained till past noon. The last result is perhaps rather unexpected, seeing that the stomata are nearly 0-150. 2 3 4 5 Minutes (from moment of removal) Fig. 40.—Teanspieation in Field Chop. Bate of water-loss from detached leaves, plotted backwards to instant o
. The cotton plant in Egypt, studies in physiology and genetics. Cotton; Cotton. 46 THE COTTON PLANT IN EGYPT chap. given consistent results, four of which have been plotted in Fig. 40. They show that transpiration is practically in abeyance at night, slow in the early morning. By 9 in sunshine it has reached a maximum which is maintained till past noon. The last result is perhaps rather unexpected, seeing that the stomata are nearly 0-150. 2 3 4 5 Minutes (from moment of removal) Fig. 40.—Teanspieation in Field Chop. Bate of water-loss from detached leaves, plotted backwards to instant of removal. Initial weight of all four was about 0"85 gram ; areas, 30-40 sq. cm. Time. Wet Bulb. Dry Bulb. 9-50 25-6° 28-4° 2'5 23-9 32'8 closed, but it is easily explained when we remember the increase in stringency of the environment which has taken place during these four hours : Sun-temperature has risen from about 50° C. to 75° C, shade-temperature from about 25° C. to 35° C, and humidity has fallen from about 60 per cent, to 20 ^er cent, of saturation. During the afternoon the transpiration rate appears to fall. 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 Balls, William Lawrence, 1882-. London, Macmillan and Co. , Ltd.
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherlondo, bookyear1912
