160 



POWER AND THE PLOW 



A separate shin piece is provided on some types. The share 

 and landside are often made of cast iron or soft, natural temper 

 steel on the cheaper plows, but often of hardened soft-centre 



Parts of a plow 



or chilled steel. The cast share is more apt to break under a 

 strain, but wears longer. It is often used with a steel mold- 

 board in sandy soils, combining the cheapness and wearing 



