On Liming Land, 503 



mild lime is in its effects on land somewhat similar to 

 that of dung, as it gives out its strength to the first crop, 

 but in one or two crops more it is all gone ; whereas 

 though the hot lime sometimes, instead of helping, 

 rather injures the first crop, its good effects continue for 

 many years. He showed me a clover field, one part of 

 which had been manured with Mr. Barnitt's hot lime, 

 and the other with Mr. Baker's mild lime. I observed 

 that wherever a heap of the hot lime had lain, not a 

 blade of vegetation of any kind had appeared, though 

 Mr. Mill's told me that every particle of it was shoveled 

 off as clean as possible ; but on that part of the field 

 where the mild lime was put, no such effects were pro- 

 duced. He told me further, that the grain was best on 

 that part where the mild lime was put, but the clover 

 is greatly superior on the other part, (it was all plaister« 

 ed alike) and I have no doubt that the succeeding crops 

 will evince a decided preference, in favour of the hot 

 lime. I expect to procure specimens of both the above 

 limes, for the purpose of having them analyzed.* 



Dr.. James Mease. 



I am sir, yours respectfully, 



J. Lang. 



* Having procured specimens of the above varieties of 

 limestone, and by the polite attention of Mr. James Cutbush, 

 have been favom-ed with a chemical analysis of each of them, 

 (for the results of which see the letter annexed) we are en- 

 abled to judge oi the striking similarity, between these and 

 the specimens which were analyzed in England by Mr. Ten- 



