. Bulletin . / ^7 -,/ it / iC ^^ X- X J- A- ^^ X- ^ ^ -/ ZZ- ^ X 7- 7- J^ iz: y^ / / / / / ^^ y^ -7 / ^^ ^-^^^ ^-^ ^^ ^i-- ,J—-^ yOi» ^J---^^ ---^ ^?^ ^-^^ __—— — ^-?^ ., ^ — — —- J ^--^^ —^ — ^ — — ^ _ — — — ? ^- ::: .:. __ 10 20 30 40 50 60 70 Temperature In degrees Fahreriheit 80 90 100 Figure 3.—Curves of equal relative humidity for varying temperatures and depressions of ?wet bulb 100,000 cubic feet of air at different temperatures and differentdegrees of saturation when the barometric pressure is 30 inches ofmercury. BUREAU OF MINES BULLETIN 197 PLATE I. SLING PSYCHROMETER BUREAU OF M IN
. Bulletin . / ^7 -,/ it / iC ^^ X- X J- A- ^^ X- ^ ^ -/ ZZ- ^ X 7- 7- J^ iz: y^ / / / / / ^^ y^ -7 / ^^ ^-^^^ ^-^ ^^ ^i-- ,J—-^ yOi» ^J---^^ ---^ ^?^ ^-^^ __—— — ^-?^ ., ^ — — —- J ^--^^ —^ — ^ — — ^ _ — — — ? ^- ::: .:. __ 10 20 30 40 50 60 70 Temperature In degrees Fahreriheit 80 90 100 Figure 3.—Curves of equal relative humidity for varying temperatures and depressions of ?wet bulb 100,000 cubic feet of air at different temperatures and differentdegrees of saturation when the barometric pressure is 30 inches ofmercury. BUREAU OF MINES BULLETIN 197 PLATE I. SLING PSYCHROMETER BUREAU OF M INES BULLETIN 197 PLATE II
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