E 78-9 
as found lefs. The quantity of air 
thus abforbed by plants may vary 
from numberlefs circumftances, as 
well as from the particular nature 
of the plant. I have no time to 
fearch in my notes for all the parti- 
cularities I have obferved upon this 
fubject. Ican fay in general from 
remembrance, that ane water- 
plants were very willing to abforb 
a good deal of air, principally when 
they were placed with roots and all 
in the air; and that they readily 
abforbed air fouled by breathing. 
___ One of thofe plants had alfo ab- 
- forbed a great deal of dephlogifti- 
cated air, that in one night 
it had abforbed half the quan- 
tity I had put with it, which a> 
mounted to 4 ounce meafures, if I 
rightly remember, 
This: 
