[ 31 ] 
SECTION vit. 
Reflections. 
IT might, perhaps, be objected, 
that the leaves of the plants are ne- 
ver in a natural ftate when fur- 
rounded by pump water; and that 
thus there may, perhaps, remain 
fome degree of doubt, whether the 
{ame operation of the leaves in their 
natural fituation takes pia | 
I cannot confider the plants kept 
thus under water to be in a fituation 
fo contrary to their nature as to de- 
Tange their ufual operation. Wa- 
ter;€ven more than they want, is not 
hurtful to plants, if it is not applied 
“too confiderable atime. The Water 
only cuts off the- communication 
‘With the external airs and we know, 
