70 On Plaister of Paris, 



field; limed in the spring of 1790, and well dunged 

 in the summer of 1793 ; in tillage at least sixty years ; 

 soil a light and stony loam, sown with clover seed in 

 March, 1794. 



Result. 1796. The improvement so great,. that after 

 pasturing it down early in the spring, the appearance 

 is in favour of mowing a good crop of grass, which I 

 intend to do. 



Process. May 5th, 1795. Sowed thirty-three bushels 

 of plaister upon about eighteen acres of the far field, 

 limed in the year 1793, and sown with clover upon oats 

 in the spring of 1794 ; soil a light isinglass loam, and 

 excessively poor before liming ; in tillage at least seven- 

 ty years. 



Result. 1796. The improvement equal to any of the 

 soils of equal fertility. 



Process. I have tried many other experiments with 

 plaister, upon several kinds of grain, flax, and garden 

 vegetables, but with such various and trifling success, 

 as to discourage me from a farther continuation of them. 



{tj^ I have unfortunately mislaid a letter from Mr. 

 Hecke welder, of Bethlehem, giving an account of the 

 use of plaister on the Brethren's farms there, by Mr. 

 Beidel and another, their superintendants. It is confir- 



