£ 137 ] 



CONCLUSION. 



I H O P E the indulgent reader 

 will excufe in me a fmall degree of 

 vanity, in flattering my felf with hav- 

 ing difcovered a law of nature hi- 

 therto entirely unknown, and hid 

 till now behind the fcreen of that 

 awful darknefs which overcafts our 

 earth during the time it withdraws 

 its furface from the direct influence 

 of that all-reviving luminary, the 

 fun, 



I flatter my felf alfo to have put 

 beyond ail doubt, that the vegeta- 

 bles have a remarkable fliare in 

 keeping up the falubrity of our at^- 

 mofphere, by imbibing thofe ieptic, 

 noxious, and phlogiftic particles, 

 which were communicated to it by 

 3 the 



