DEDICATION. 



provision fhe has made for them, not 

 only vigorotifly to draw to great 

 heights plenty of nouriihment from 

 the earth ; but alfo more fublimed 

 and exalted food from the air, that 

 wonderful fluid, which is of fach 

 importance to the life of Vegetables 

 and Animals ; and which, by infinite 

 combinations with natural bodies, pro- 

 duces innumerable furprizing effedts, 

 many inftances of which I have here 

 fhewn. 



The fearching into the works of 

 Nature, v/hile it delights and inlarges 

 the mind, and ftrikes us with the 

 ftrongeft affurance of the wifdom and 

 power of the divine Architect, in 

 framing for us fo beautiful and well- 

 regulated a world, it does at the fame 

 time convince us of his conftant bene- 

 volence and goodnefs towards us. 



A 3 That 



