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rating cveiy circumftance that can in any cafe affect 

 the refult, and viewing it diftinct and apart from all 

 others, gives full room to perceive what degree of 

 weight it ought to have in every practical cafe, and 

 to fhew how far it is either effential or unimportant. 



The experiments which accompany this letter, 

 and the obfervations that refult from them, fuffi- 

 ciently evince the juftnefs of thefe remarks, and 

 afford a very convincing proof of the neceffity of 

 fubjecting the different cafes that daily occur in 

 agriculture to the teft of accurate experiment, if 

 ever we hope to obtain fuch a thorough knowledge 

 of facts as to introduce that degree of fleadinefs in 

 the practice of husbandry, of the want of which we 

 have ft ill reafon fo juftly to complain. 



I hope any apology for the trouble I now give 

 you will be unneceffary. I remain, with great re- 

 flect for the worthy members of yqur Society, 



Sir, 



Your moil obedient, and 



mod humble fervant, 



Cotfield, near Leith, JAMES ANDERSON, 



Nov, 28, 1786. 



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