Report of the Judges. 227 



throe holes respectively 3|, 4^ and 8 inches behind the arc. A 

 bolt passes through the rearmost boles, on which the bridle rotates 

 as a centre horizontally. A bolt passes through either the 3i or 

 4^ inch holes, which secures the bridle in the line of the beam, or 

 it may be thrust through holes drilled in the beam, one inch to 

 the right or left of the central holes, which causes the plow" to 

 take more or less land. An extent of lateral motion, amounting 

 to 3^ inches, is secured by this arrangement, while the tendency 

 earthward is regulated by the vertical holes in the bridle. 



The WJieeL 

 Fig. 114,/, is made of cast iron, 10^ inches in diameter and 1| 

 inches wide. The land side face is a flat plate, perforated by five 

 holes, each 3 inches in diameter, and having lateral ril)S on each 

 side between the holes. Its centre, when running at a depth of 8 

 inches, is 9 inches behind the fore end of the beam. It is huno- on 

 a U shaped attachment, a c b, Fig. 84, having its right limb at its 

 upper extremity sharply curved and prolonged to the right. 

 Eighteen inches behind the fore end of the beam a bolt passes 

 horizontally through the right extremity of the limb and through 

 the beam of the plow, on which it rotates vertically. The axle of 

 the wheel projects tow^ards the left from the low^est portion of the 

 curve. A cast iron button, having a pin on its rear extremity 

 which projects towards the right and enters the beam about half 

 an inch, is its centre of rotation. It has a shoulder cut at its fore 

 end, through which the left limb slides upward and downward. 

 A bolt passes through the middle of the button and through the 

 beam, having a thumb screw on the right side of the beam, by 

 wdiich the left limb of the wheel attachment is securely clamped 

 at any point through a vertical range of ten inches. 



TJie Coulter, 

 Fig. 114, h, is 2 feet 2| inches long; cutting edge, 10| inches; it 

 is 3 inches wnde and i inch thick, and has a curved taper from the 

 back to the point. The angle which its cutting edge forms Avith 

 the base line is 64 degrees. Its point stands 4 inches above the 

 sole and \ of an inch inw^ard from the plane of the land side, in 

 which respect it varies very materially from most plows. It is 

 set against the land side of the beam, to which it is secured by a 

 clamp formed on three sides by a |-inch round iron rod, having 

 screws cut on the ends which project beyond the right face of the 

 beam. Cast iron plates, k and e, furnished with three semi-cylin- 



