C 15 ] 



rather to the fun-ihine: thus thg 

 leaves continuing to live, continue 

 alfo to perform the office they per- 

 formed out of the water, as far as 

 the water does not obftrudt it. The 

 water prevents only new atmo- 

 fpheric air being abforbed by the 

 leaves, but does not prevent that air, 

 which already exifted in the leaves, 

 from oozing out, This air, pre-' 

 pared in the leaves by the. influence 

 of the light of the fun^ appears foon 

 upon the furface of the leaves in 

 different forms, moft generally in 

 the form of round bubbles, which, 

 increafing gradually in fize, and de- 

 taching themfelves from the leaves, 

 rife up and fettle at the inverted 

 bottom of the jar: they are f suc- 

 ceeded by new bubbles, till the 

 leaves, not being in the way of fup- 

 plying themfelves with new atmo- 



fpheric 



