. Bulletin. Natural history; Natural history. Study of the Ciiinc ii Bug 509. Relative 40 60 Humidity 30 PERCENT Fig. 5. Provisional cliart tor the second instar, based on mental total of 880 units. develop- the were t\-cl upon growing plants, indicated less eflccl of humidity than shown by cut jjieccs of plant. The method of reading off the effect of a 10% decrease in humidity from the chart is shown in Pig. in. X, is located on 2i°C. and '.>ii% relatixe humiflity and has a velocity \alue of 10 developmental units per hour. X^, is located on the same temperature (2i°C.) and 80% r
. Bulletin. Natural history; Natural history. Study of the Ciiinc ii Bug 509. Relative 40 60 Humidity 30 PERCENT Fig. 5. Provisional cliart tor the second instar, based on mental total of 880 units. develop- the were t\-cl upon growing plants, indicated less eflccl of humidity than shown by cut jjieccs of plant. The method of reading off the effect of a 10% decrease in humidity from the chart is shown in Pig. in. X, is located on 2i°C. and '.>ii% relatixe humiflity and has a velocity \alue of 10 developmental units per hour. X^, is located on the same temperature (2i°C.) and 80% relative humidity and has a velocity value of — a decrease of 15% in rate of development. Again. X.,. on temjjerature 21 °C. and 90% relative humidity, has a velocity of ;) ; and X,. on the same. 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 Illinois. Natural History Survey Division. Urbana, State of Illinois, Dept. of Registration and Education, Natural History Survey Division
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
