[ 24t° J 
the leaves was taken out of the jars, = 
at three in the afternoon. prey 
The refult was, that the leav eg 
put in pond-water had yielded the 
leaft quantity of air, and that of no 
better quality than common air. 
Thofe in the rain-water had yielded 
more air, and of a better quality. 
Thofe in the rivér-water had yield- - 
ed {till more and better. The pump- 
Water had pide the maott and beft 
, ‘To be ahi to judge t : 
“of the exact degree of pane of | 
thofe airs, I put them all to the’ 
nitrous teft; the refult was as fol- 
lows 3 
Air from the leaves in ftagnating- 
water 2.045 2.203; 3.22. Has 
Air from the leaves in rain-wa- 
ter 1 943 1.965; 2.693 5G 291. 
