12 



Tabic of the 

 quantities of 

 y/atcr evaporated 

 ^r minute at 

 temperatures 

 between 20? 

 and ^5?. 



O;; EVAPORATJOK^. 



Tabic conlimicd. 



V(t of the table The ufe of tliis table will appear from the following pro- 



familiarly il- blems I 



luftratedt 



PROBLEM I. 



Haying given the temperature at which the aqueous atmof- 

 phere begins to be condenfed into water, and the temperature 

 of the air, to find the quantity of water that would be evapo- 

 rated in a minute from a velTel of fix inches diameter. 



Solution. Subtra6l the grains oppofite to the lower temper- 

 ature from thofe oppofite to the higher one, in the firft, fecond 

 or third column of grains, accprdjng to the ftrength of the 

 wind, and the remainder will be the quantity evaporated in a 

 minute under thofe circumftances, nearly. 



Example^ 



