The young folk's cyclopædia of games and sports ; (1899)
Champlin, John Denison, 1834-1915, Bostwick, Arthur Elmore, 1860-1942, joint author · New York, H. Holt and company · leaf 443
helittle houses with figures of a manand woman, one of whom appearsin moist and the other in dryweather, are made in this way. Wet and Dry Bulb Thermometer.This form of hygroscope consists oftwo thermometers hung side by side.Around the bulb of one is tied apiece of soft cloth, the end of whichdips… … the water evaporates fast, and thewet bulb thermometer stands muchlower than the other, while on 0 s Wet and Dry Bulb Thermometers. damp days the water does not evap-orate so quickly, and so it standsonly a little lower. Hence the in-strument is used to tell whether theair is dry or damp. Phial…
Games · Sports · Card games
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