]70 Double furrow Plough. 



wheat with half the number of ploughmen and mules, 

 which he used, before he adopted the improved Draveil 

 double furrow plough. His lands are free from large 

 stones and stumps, and part of them are hilly, and part 

 nearly level, in both of which kinds of land he has used 

 it, and found it to answer perfectly. His experience 

 proves the utility of this improved plough, and that it 

 surpasses the expectations of general Armstrong, (who 

 first transmitted to this country, from France, the draw- 

 ings of the original Draveil plough, to the honourable 

 Richard Peters, of Pennsylvania,) which limited its use 

 to light and level lands. 



The improver of this plough, after throwing away the 

 wheels and complicated fore beam of the original French 

 plough, found it necessary, in order to make the furrows 

 of the same depth, to turn the point of the hinder share 

 a litde above the level of the fore share. If this be not 

 properlv attended to by the maker of the plough, the de- 

 fect may be easily remedied by the ploughman, by rais- 

 ing the fore beam, by means of a wedge driven between 

 the beam and the shoulder, if the fore share runs too shal- 

 low, and the hind share runs the proper depth. If, on 

 the contrary, the fore share runs the proper depth, and 

 the hinder share too deep, the point of the latter must be 

 raised, by shortening the shoulder of the hinder plough. 

 When the balance is thus properly established, the cle- 

 vass will regulate the depth of this, as it does that of the 

 ordinary plough. As there is a strong tendency m this 

 ploueh towards the land, it is proper, in making it, not to 

 turn the shares at all to the land, and to give the fore 

 beam a bend towards the land. Should this not be suf- 

 ficient, the clevass will supply the defect. 



