Report of the Judges. 233 



of the share, measured on the base line. The clog-brace D, and 

 dog-rod E, Fig. 115, take the place of the thimble-brace formcrh^ 

 used. The dog D being more convenient, is preferred. A § 

 wrought iron brace extends from the top of the rear standard 

 diagonally across to the rear of the mould-board. It is 15 

 inches long, and hooks at both ends into staples which are cast 

 on these plates, and which, on the mould-board, is 4| inches 

 below its upper edge, and 5 inches in front of its rear edge. A 

 series of straight lines, which coincide at all points with a straight- 

 edge running from the front to the back part of the mould- 

 board. The iirst of these extends from the land side of the 

 point of the share to a point in the lower edge of the mould- 

 board, which is 2 1 inches vertically distant from the plane of the 

 sole, and 18 inches distant from the point forms an angle with 

 the plane of the sole of 5° 02'. Another of these lines, drawn 

 from the point where the land side joins the mould-board on the 

 breast, to a point in the lower edge of the mould-board 7| inches 

 vertically distant from the base line, forms an angle of 4° 08'. 

 Another of these lines runs from the top of the breast to a point 

 in the lower edge of the mould-board llf inches vertically above 

 the base line. The uppermost coinciding line at the top of the 

 mould-board forms an angle of 3° 20'. It will be seen that these 

 lines form angles with the plane of the sole gradually though 

 not absolutely regularly diminishing as they rise vertically on the 

 mould-board. Another set of lines may be drawn from front to 

 rear forming angles with the first named line at the point of 62°, 

 and at the rear of the mould-board of 85°, the intermediate lines 

 forming angles gradually increasing from front to rear, but, as in 

 the case of the other set of lines, the rate of increment is not 

 entirely regular. If these lines are drawn upon the sui-face of 

 the mould-board their intersections will form trapezoids; if the 

 diagonals are drawn on any of these it will be found that a straight- 

 edge applied to one of them will show a concave surface, while 

 at ihe cross diagonal it will show a convex surface. 



The mould-board closes over the land side at the breast by a 

 lip; it also has a flange around its upper and lower edge one- 

 half an inch broad. The mould-board is attached to 'the standard 

 by means of the pin seen in Fig. 115, and marked P, which enters 

 a thimble cast at the lower end of the inside of the mould-board, 

 ii, Fig. 116; it also rests on the projecting ear, O, Fig. 115, to 

 which it is fastened by a bolt and nut. By this" simple ai-range- 



