[ 3 4 ] 



Many of them even thrive the bert 

 in it. The beft quality required 

 therefore in the water ufed for this 

 purpofe feems to be, to pofTefs of 

 itfelf air enough, fo as not to imbibe 

 it readily from the plants ; and not 

 fo much as to be overcharged 

 with it ; for if the water is too 

 much deprived of its own air, it 

 muft be more diipofed to abforbe it 

 from bodies plunged into it. And 

 if water iliould be fo much impreg* 

 nated with any air, this air would 

 readily rulh into the fubftance of 

 the leaves, and fpoil by its bulk, or 

 by its particular nature, the elabo^ 

 ratiori of the dephlogifticated air ; 

 the more fo, as water, when found 

 faturated with air, is found to pof^ 

 fefs this air in the form of fixed 

 air, which differs too much from 

 the nature of dephlogifticated air, 



or 



