. Biology of deserts : the proceedings of a symposium on the biology of hot and cold deserts organized by the Institute of Biology. Deserts. so 85 90 TEMPERATURE °F lOO I05 IIO Figure 2. Monthly mean values of maximum temperatures (daily) and daily minimum of relative humidity possible to do even light work out-of-doors. If the relatively frequent occurrence for 3-4 hours per day of conditions hotter than correspond to the line CC is to be avoided, the mean temperature of the hottest month should not exceed 75°F in a dry climate, or 73°F in a damp climate. This rule may be taken as a rough gui
. Biology of deserts : the proceedings of a symposium on the biology of hot and cold deserts organized by the Institute of Biology. Deserts. so 85 90 TEMPERATURE °F lOO I05 IIO Figure 2. Monthly mean values of maximum temperatures (daily) and daily minimum of relative humidity possible to do even light work out-of-doors. If the relatively frequent occurrence for 3-4 hours per day of conditions hotter than correspond to the line CC is to be avoided, the mean temperature of the hottest month should not exceed 75°F in a dry climate, or 73°F in a damp climate. This rule may be taken as a rough guide. At Beira on the Coast of Portuguese East- Africa, slightly north of latitude 20°, the monthly mean values of minimum relative humidity vary between 59 and 63%, the monthly mean maximum temperatures varying from °F to °F. All the months from May to September are to the left of CC in Fig. 2, all the remaining months being to the right of CC. Thus it is likely that normal office hours or light workout- of- doors, would be possible from May to September inclusive, but would not be possible during the remainder of the year. Among the data which I received from Mr Davies from East Africa were hourly mean temperatures and relative humidities for each hour of the day, and month of the year, for Chukwani, From these data it is possible to represent, on such a dia- gram as that shown in Fig. 2, the mean diurnal variation of the conditions for each 215. 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 Cloudsley-Thompson, J. L. London : Institute of Biology ; New York : Hafner
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Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectdeserts
