40 



TEENCHING AND SUBSOILING 



If the roads are in good order the animals may be yoked 

 directly on the gin, which travels on the rollers ; if not, it 

 may be carried on a dray, or on a truck made specially for 



*g*s 



?^9^^*^^-- '" 

 Fig. 19. Vernette's Trenching Plough. 



the purpose. During work the machine is displaced on a 

 pair of rails made of rolled joist girders. Pegs prevent any 

 displacement in the direction of the cable. 



Fig. 20. Patent Automatic Carrier for Vernette's Plough. 



