424 O F P L O U G H S. Part IV. 



of the fpace between the two handles, fliould be on the left fide, and 

 the two other thirds on the right fide, in order to facilitate the plow- 

 man's walking in the furrow. This difpolition is fhewed mjig. 2. 

 in which a line e, f, drawn from the middle of the beam, between 

 the two handles, give to the left fide a third Pf of the diflance 

 P^ between the two handles, and the two other thirdsy^to the 

 other fide. 



For want of wood naturally bent to a proper fhape, thefe handles 

 may be made of two pieces firmly riveted and faftened together; and 

 if it fhould be more convenient to the plowmen, the whole fpace be- 

 tween the handles may be on the right fide, as n\fig. 6. 



The Iheat EF fig. i, fl:iould be very llirongly and clofely faftened 

 by its tenon to the ground-reft, at g. An intelligent workman will 

 eafily make it of a proper fize, which is about two inches and a half 

 wide, and a full inch thick. The inclining of this piece with the 

 ground-reft, gives it greater ftiength to refift, than if it was faftened 

 to it at right angles. 



The mould-board, reprefented by R S, fig. 2 and AB, fig. 7, 

 is from 30 to 31 inches long, and ten inches high or deep. It ought 

 to be placed as in^y^. 8, where its end ^ forms an acute angle, ter- 

 minating at the jundlion of the fin of the fhare : its other end B ex- 

 tends beyond the length of the ground-reft, againft which it ought 

 to incline, in fuch manner that, fuppofing the ground-reft to be 

 lengthened out as far as C, the line C B would be twelve or thirteen 

 inches long, reckoning from the fartheft lateral furface of the ground- 

 reft to the fartheft lateral furface of the mould-board, which, being 

 thus placed, will form the width of the furrow. 



The lower part of this mould-board is Hoped a little inwards, as is 

 exprefiTed by the fliade in^^. 7 : and the part ^fig. 7, fliould jet out 

 at leaft two inches beyond the part a. To this end, the mould- 

 board fliould be made of a plank about three inches thick, which 

 will bear fcooping on both fides, in order to give it the concavity 

 without, and the convexity within, reprefented inj^. 3 and 7. 



The mould-board Ihould be well faftened, to prevent its being dif- 

 placed by the refiftance of the earth. The upright piece C Dfi'g. 7, 

 which jo;ns to the handles at its end D, and to the mould-board at its 

 other end C, fupports it ftrongly. It is highly necefi^ary to cover the 

 part of the mould-board which bears upon the earth, with a thin 

 hoop of iron, in order to preferve it ; for otherwife it would foon 

 be worn out. 



The 



