276 IMPLEMENT S. 16. 



poirible to turn a deep one with it in a work- 

 manlike manner. There is not room for it 

 within tlic hollow or fcmi-archway of the 

 mouldboard. The inevitable efFedl of this 

 is, either the furrow is forced away wholly 

 by the upper edge of the mouldboard and 

 fct on edge ; or the mouldboard rides upon 

 the furrow, railing the heel of the plow from 

 the ground ; the evil effcdls of which need 

 not be explained. 



An UPRIGHT STERN, With E movcablc 

 HEELPLATEj to tum the futrow at any given 

 deptii, is in this pomt of view much pre- 

 ferable to a hollow mouldboard ; and if its 

 ufe in raifing a creft of mould for the pur- 

 pofe of covering the feed be added, its pre- 

 ference is fiill more confpicuous ; and I fee 

 no reafon why the Yorkfliirc plow fhould not 

 receive fo valuable an improvement. 



The FOREPARTo of a Yorkfhlre plow of the 

 bed conftruftlon arc admirably adapted to 

 infinuate themfcives beneath the foil and 

 ralfc the furrow : a better form, perhaps, 

 cannot be conceived. 



But 



•j- Sec JMiNUTKS OF Agriculturi, Plate III, 



