Table 41. 



REDUCTION OF PSYCHROMETRIC OBSERVATIONS. 



ENGLISH MEASURES. 



Values of 0.000367 B (t -t,)M r^^*i j- 



^ =: Barometric pressure. 



^^Temperature of the dry-bulb thermometer. 

 ^, =r Temperature of the wet-bulb thermometer. 



Smithsonian Tables. 



136 



