On Plaister of Paris. 47 



from which the produce in grass was very great ; some 

 judged three tuns per acre; I suppose there was cer- 

 tainly two and a half per acre for several crops ; it how- 

 ever declined so that in five years their was but little 

 clover, the old plants dying, and the new ones being 

 overpowered or smothered with green grass. I then at 

 seeding time broke it up and harrowed in wheat, the 

 next spring sowed it with clover and plaister on the 

 wheat. The clover following this operation was light in 

 proportion to the former, perhaps owing to the roots of 

 the green and other grass not being sufficiently killed 

 by the one ploughing, thereby the plaister not having 

 so good an effect on a second application as the first. 



The next piaistered was with respect to having been 

 limed and dunged, the same with the first and the con- 

 tinuance of large crops of grass. It was then in the 

 spring broke up and planted with corn, and the next 

 summer sown with barley and spring wheat; and at or 

 about the same time widi clover and plaister, which sue-* 

 ceeded nearly equal to the first time sown with plaister. 



The next second application of plaister was on the 

 sward six years after the first plaistering. This piece of 

 land had a dressing of rotten dung in the fall. The next 

 summer first crop was light, the second crop better 

 chiefly green grass and but little clover. The next 

 spring where the dung had disappeared, and was incoi;- 

 porated with the soil, it was sown with about two and an 

 half bushels of plaister per acre, which was succeeded 

 with a middling heavy crop, nearly one half clover, I 

 suppose brought forward by the plaister. 



On some other of my fields, within reach of my barn 

 yard, that has frequently been dunged, the plaister harf 



