RE A PING- MA CHINES. 1 7 



labour is great in suitable localities, but it is not 

 so uniformly applicable, nor does it so certainly 

 and quickly repay its cost as the reaping-machine. 

 On light and friable soils the double-furrow The 

 plough, balancing itself with greatly less friction furrow 



plough. 



in proportion than the single plough, is found to 

 do the same work with one man and three 

 horses as two single ploughs with two men and 

 four horses. This is equal to a saving of 100 

 per cent, in man-power, and 25 per cent, in 

 horse-power, and it will become more generally 

 available on the lighter soils if any serious 

 pressure arises from scarcity of labour. In the 

 threshing of corn, and cutting of straw and hay General 



for fodder, and the grinding and bruising of corn steam- 

 power in 



and cake for horse and cattle food, the aid of manipula- 

 tion of 



steam-power has long been used by the farmers crops. 



of this country. 



Next to the economy of labour may be Successive 



i j .LI r i ^i corn-crops. 



ranked the increase of produce by the expe- 

 dient of taking two corn-crops in succession 

 where the land is clean and in high condition 

 and can bear the application of special manure, 

 and where the agriculturist is free to follow a 



