164 



a' A a 



OF 



b 



c C c' 



B b' 



It is evident, in addition to every other consideration, 

 that the breadth of ridges must also depend upon the mode 

 of culture. Where the broad-cast system is followed, the 

 size must be calculated for enabling the sower to scatter 

 the seed, in the manner the most likely to yield a produc- 

 tive crop.* Whereas, when the drill system is adopted, 



* It is said, that a good sower will scatter the seed sufficiently correct, 

 in ridges of any breadth ; but good sowers are not always to be met with. 

 The breadth of ridges is therefore an important point to attend to, in 

 regard to sowing, and also for the purpose of having the harrowing pro- 

 cess, and the reaping, properly executed. A pair of harrows would cover 

 7 or 7 1 feet; but as some allowance must be made for overlapping, 

 6 feet only can be depended on. Any multiple of 6, is therefore pre- 

 ferable to that of a different number. Each reaper will cut 6 feet, and 

 it will generally be safer for the sower also, to go along the ridge once 

 for every 6 feet, consequently thrice for 18 feet, &c. An hour or two 

 is ill saved upon the important operations of sowing and harrowing, and 



