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merits, is to be had only in fmall trads of 

 land. An acre, or half an acre, may be 

 commanded perfedly fimilar, when four or 

 five cannot be found. And thefe remarks are 

 applicable to all forts of trials on every kind 

 of vegetable, and culture, if comparative. 



The condud: of experiments in fmall, is 

 alfo much eafier conduced, and with a 

 greater certainty than thofe in large, for 

 w^hich reafon they muft be more agreeable 

 to a gentleman than the larger, more 

 difficult and complex trials, wdiich are not 

 attended with the fame accurate authority. 



From all the obfervations I have been able 

 to make in my courfe of experimental agri- 

 culture, I am clear that a comparative experi- 

 ment of a perch or two, is of much better 

 authority than one of twice as many acres*. 



• Having mentioned my experience in agriculture more 

 than once, it is nccefiary to add, in my own defence, that 

 I kept, during five years, a very exai5t regiiler of all my 

 experiments on every part of huPoandry, and, in many 

 inftanccs, in points totally neglefted or overlooked by all 

 former writers, my trials of the comparifon between the 

 old and new hufbandry, extended to every kind of grain, 

 pulfe, roots, &c. S^c. that could be applied to hufbandry 

 ufes, and, I flatter myfelf, I difcovcred the real merit of 

 each with no flight accuracy, as far as extended to two 

 foils. I have fpent fome time in managing thofe experi- 

 ments, and fliall lay them before the public, humbly 

 hoping that they may be of feme ufc to mankind, 



6 But 



