No. 105.] 



105 



The coulters A A should be made of Russia bar, and welded from 

 B to the top. The anterior and posterior edges made short — C, bot- 

 tom piece made of li inch square iron, 2 feet long from point to 

 point — split the ends of the bars to receive the coulters, weld, and 

 point with steel, — D, share, the width of a Russia bar, forked at the 

 angle E, — lip formed at right angles and bolted at F. The posterior 

 should be about three inches higher than the anterior end the of 

 share. G, brace. H, rod or chain attached to clevis pin. Height 

 from C to under side of beam 18 inches 

 used in very hard clayey sub-soil. 



The share D, need not be 



