xvi Preface. 



coveries and experiments, will be enabled to ren- 

 der this manure still more valuable, by the most 

 judicious modes of apphcation. It will then be 

 fdt by the cultivators of our soil, that science essen- 

 tially promotes their interests and happiness. A 

 practical conviction of the advantages derived 

 from it, will urge them to afford to literary establish^ 

 ments, and men of useful learning, the public and 

 individual support they so justly merit, 



Richard Peters. 

 January 3d, 1797. 



