[ xxxvii ] 



power of infecting the circumam- 

 bient air in the dark, even to fuch 

 ' a degree, that in a few hours they 

 render a great body of good air fo 

 noxious, that an animal placed in 

 it lofes its life in a few feconds ; 

 that all flozvers render the fur rounds 

 ing air highly noxious, equally by 

 night and by day ; that the roots re-* 

 moved from the ground do the fame, 

 fome few, hozvever, excepted-, but 

 that in general fruits have the fame 

 deleterious quality at all times, though 

 principally in the dark, and many 

 to fuch an aftomfhing degree, that 

 even fome of thofe fruits which are 

 the rnojl delicious, as, for infiance^ 

 peaches, contaminate fo much the 

 common air as would endanger us to 

 lofe our lives, if we were /hut up in a 

 room in which a great deal of fuch 

 fruits are Jlored up ; that the fun by 

 c 3 ifM 



