Substitute for Trench Ploughing. -91 



Explanation of the Coulter Plough. 



A to B, 1 foot 3 inches. 



B to end, 4 feet 9 inches. 



C to D, the coulter, 2 feet 8 1-2 inches. 



E to C, 8 1-2 inches. 



F stud, 10 inches long. 



G G, 2 feet 2 inches. 



Handles, 6 feet long. 



By means of the holes in the coulter D E, it may be 

 set to different depths, as it will run in until the hind 

 end of the beam and the stud in the fore end, run on the 

 ground. If the hind end of the beam should wear away, 

 a plate of iron may be put on it.* 



An implement called a miner, is frequently used in 

 Europe, with the same view as the coulter plough, de- 

 scribed above by Mr. Kirk, viz. opening ground to a 

 great depth : "it is made very strong, but with one share 

 only, not having any mould board ; it therefore rather 

 loosens than turns up the earth. In deep, stiiF soils, 

 where the surface mould is good, it may be conveni- 

 ently employed in the same furrow, after a common 

 plough, in order to stir the ground to a greater depth. 

 It is an extremely useful tool where working deep is 

 necessar)^, without bringing up the inert under stratum 

 or sub-soil, as in loosening the ground for carrots, or 

 other tap-rooted plants, and in eradicating the roots of 

 thistles, or other weeds which strike deep in the earth." 

 — Dickson's Agriculture, Loud. 1805. Vol. 2. page 12. 



* Working models of these implements, are deposited in 

 the Society's room for public inspection. 



