[ 437 J 



additional aid of a horfe. This would almon: lead 

 me to fufpedt fomc.-error \fi the mechanifm of big 

 plough. 



The fingle wheel under the beam of farmer 

 Sul/y's plough, I fhould apprehend would deftroy its 

 utility as a fwing, without making it a good wheel- 

 plough.' The wheel, l^m«ftire, mud render this 

 plough very ufelefs on wet tough land, as • I have 

 before remarked, ^ 



I am, with great regard. Sir, 

 Your moft obedient humble fcrvant, - 

 JAMES 'KtyJiM. 



Shfnley-Lodre^ Herts^ 

 Nov, 13, 1789. 



[The Society ^ much obliged to Mr. Adam for this 

 ktter, particularly as it defcribes a new plpugh which prpmifes 

 to becQine of publlck utility. With regard to Mr. Adam's 

 ftrlchires on the ploughs ufed at "the laiipublick trial fbr the 

 premiums of this Society^ it is prefumed that had he been 

 prefent, and a witnefs of the uncommon ftrength of the foil, 

 under an old ley, and rendered ftill harder by froft, he would 

 liave thought the ta(k no unequal one for fix oxen drawing a 

 double-coultered plodgh only on a four-inch furrow. Nor 

 will the difficulty with which a light fingle plough could be 

 ^i*awn by four oxen, without the aid of a horfe, be confidcred 

 as a trivial argument in favour of the double plough.] 



F f 3 Article 



