Of Vegetation. ^if 



more fubtile and refined principles of ve- 

 getables are formed : Por fo fine a fluid as 

 the air feems to be a more proper medium, 

 wherein to prepare and combine the more 

 exalted principle of vegetables, than thegrof- 

 fer watry fluid of the fap; and for the fame 

 reafon, 'tis likely, that the moll: refined and 4 

 aciive principles of animals are alfo prepared 

 in the air, and thence conveyed thro' the 

 lungs into the blood ; and that there is plenty 

 of thefe fulphureo-aereal particles in the 

 leaves, is evident from the fulphureotis exu- 

 dations, which are found at the edges of 

 leaves, which Bees are pbferved to make 

 their waxen cells of, as well as of the duft 

 of flowers : And that wax abounds with ful- 

 phur is plain from its burning freely, &c. 



We may therefore reafonably conclude, 

 that one great ufe of leaves is what has 

 been long fufpe&ed by many, viz. to per- 

 form in fome meafure the fame office for 

 the fupport of the vegetable life, that the 

 lungs of animals do, for the fupport of the 

 animal life 5 Plants very probably drawing 

 thro' their leaves fome part of their nou- 

 rifnment from the air. 



Y % But 



