§2 On Plaister of Paris. 



had so much manure ; the former being much more 

 subject to be injured by drought than the latter, from 

 which I am of opinion, that to preserve the fertility of 

 land it should lie under grass as long as it conveniently 

 could, and to vary the kinds of manure and productions. 



I am, sincerely thine, 



John Sellers. 

 Richard Peters, Esq. 



