CANE SUGAR. 



" I consider this machine to be so valuable to the planter, that no sugar 

 estate should be unprovided with it ; it enables him to perform at a very 

 inconsiderable cost an amount of work which, when executed by hand labour, 

 is well known to be very tiresome and expensive." 



FIG. 28. 



Turn or Mould-Board Ploughs. Turn or mould board ploughs 

 are so called because they cut from the soil a clean slice and turn it over top 

 side down, through the action of the mould board ; the single mould board 

 plough is shown in Fig. 28 ; a is the share, b the landslide, c the coulter, 

 and d the mould board. The coulter shown is of the knife type ; it may be 

 replaced by a rolling coulter, consisting of a revolving steel disc, and instead of 

 being hung from the beam, it may be bolted on to the share or may be entirely 

 absent. This type of plough is the instrument that is almost always used in 



FIG. 29. 



the preparation of land for planting crops of all kinds ; the plough may be a 

 single unit, or there may be a number of units forming a gang plough. The 

 double mould board plough is shown in Fig. 29, the lettering being as for the 



104 



