^2 Experiments and O-hfervations 



with Gypfim, a fpoonful to a hill — two with pulverized oyfter- 

 fhells---two left unmanured ; the difference fo trifling, that no 

 inference can be drawn fiom it in favor of thofe manures. This 

 is a remarkable faft, fmce the foil independent of its richnefs, 

 was of that kind which is moft benefited by Calcarious ma- 

 nures, and confirms what the experiments of the clover upon 

 the rye field had before intimated, to wit, that the operations 

 of this manure is very little aided by the natural fertility of 

 the foil. 



No. 11. 

 In order to render thefe experiments more extenlive than 

 the foil of my own farm would admit, I furnifhed feveral of my 

 tenants with Gyp/ii7n, and attended to the application of it. I 

 Ihall feleft from them only three out of many experiments on 

 corn, the refult of all being nearly fimilar to thefe. 



iftj Was on a field of twelve acres of corn, the foil extremely 

 poor, and incapable of yielding any thing without manure, 

 except buck-wheat and rye. It was that fpecies of land which 

 is known by the name of flirub oak and pitch pine plain; five 

 acres of this was manured with liable dung — three rows with 

 pulverized oyfter-ihells — three with unleached alhes, half a 

 pint of each, and the remainder with Gypfamy a table fpoonful 

 to a hill. 



In the beginning of the fummer the dunged part made the 

 fined appearance j the afhes next, but as the drought came on 



