AGRICULTURE AND PLANTING. 87 



On the Use of the Couch Grass Drag. 



and left from one another, so that the coulters drag every six inches, as per fi- 

 gure. The coulter holes must be plated with iron on both sides. 



D. a bar, three by one inch square^ for bracing the middle part of the ma- 

 chine together. 



E. an iron bolt, which fixes the fore part of the side beams C C, to the 

 middle beam B. 



F F. the handles which govern the machine. 



G. the hind bar, four inches square, for bracing the three beams together, 

 and for receiving the shanks of the hind wheels. 



H. another bar, three by one inch square ; between these two bars the han- 

 dles are placed, by means of square staples, as per figure, and are put in and taken 

 out at pleasure. 



I I. the hind wheels, teii inches diameter. 



Fig, 3. Is a scale of feet, inches, and quarters of an inch, from which tlie p.- 

 whole has been laid down. 



Fig. 4. Is a front view of one of the coulters, the full length before it is bent 

 to its proper form, whicli is eighteen inches long below the part that goes into 

 the beam. 



On- the Use of the Couch Grass Drag, 



Ti 



HIS machine is of vast importance in cleaning land infested with couch 

 grass, as it tears up the couch grass to the surface, without ploughing the land, 

 or breaking the rpots, and it can with two men and four horses, drag fifteen 

 acres in one day. 



