THE ga:\g plow 



137 



cutting the grass and weeds between rows of badly tilled 

 corn. A two-horse paring plow has been constructed, in 

 which the depth of cutting is accurately regulated by 

 wheels placed on an axle, like those of a cart. The cast- 



Fisr. 145. 



Paring plow. 



iron blade, which cuts about three feet wide, is raised or 

 depressed by means of screws pas-sing through the axle. 

 Its chief utility is in destroying grass and weeds before 

 the sowing of broadcast crops. 



THE GAXG PLOW 



consists of three or four small mould-boards placed side 

 by side (fig. 146), and is used for shallow plowing, or for 



Fi". 146. 



Gang plow. 



burying manure or seed on inverted sod, without disturb- 



