t^pi* experiments on gypsum. r'4<J • 



It is to be regretted that Mr Palluel has not specified the 



proportional produce of each on the same space of ground. 

 It is farther to be regretted that our countrymen fliould 



be so (hy at making comparative experiments of this 



sort. The benefits that would be derived from these 



would be great. 



**V EXPERIMENTS ON GrPSWM AS A MANURE. 



When gVpsum was noticed in this work as a manure, Bee, . 

 vol. i. p. 297, it was hinted that probably its effects might . 

 be different in America from what we experienced in Eu- 

 rope, chiefly because the grafses which naturally spring up- 

 there, are probably different from those that are commonly 

 cultivated here. It even appeared from these experiments, 

 that this manure operated more powerfully on one kind of 

 vegetable production than another 5 the effects on grafs, 

 were great, on wheat, scarcely perceptible. 



The following experiments tend to {how, not only that 

 It operates differently on different vegetables, but also its 

 comparative effects when tried with some- other manures. 

 The experiments were made by the same Mr Crette de 

 Palluel J and both the former and this are recorded in the 

 memoirs of the Royal Society of Agriculture in Paris. 

 Experiment Jirst. 



" I divided a piece of lucerne," says he, "consisting of 

 four arpents, into four equal parts. The soil was all of 

 equal quality. 



" On the first division I caused be sowed thirty bu-. 

 (hels of peat a(hes, which cost five livres. 



*' On the second thirty bulhels of gypsum, which cost 

 five livres ten sols. 



" On the third, thirty bufliels of pigeons dung, value 

 SIX livres. 



" And on the fourth, nothing. 



