i 



ON RAIN, EVAPORATION, '.<£ 



169 



Tabulated re- 

 fults. 



The following obfervations were made when the water Variation of the 

 pafled through both pipes : that is, when the veflel was filled experiments. 

 up with earth above the level of the upper pipe. 



1796 



Jan. 

 Feb. 



May 



June 



Top pipe Bottom pipe. 

 Inch. Inch. 



25 ,190 ,280 



30 ,080 ,114 



2 ,100 ,254 



8 ,196 ,140 



1 ,163 ,000 



1 0— - ,060 ,400 



12- 

 15- 



,312 ,175 



,190 ,200 



,120 ,040 



Total 1.411- 



.603 



*Phe column of mean evaporation is derived by taking the Remarks on the 

 difference of the two columns preceding it ; but it mould be tables, 

 ©bferved that though this method is fufficiently exacl in taking 



the 



