12 THE FARMER'S MANUAL. 



2. When used upon a stiff soil, it breaks the clods, 

 and thus pulverizes that surface which could not be 

 done with the harrow. 



3. When used upon stony grounds laid down to 

 mowing, it presses the stones into the earth even with 

 the surface, at the same time that it breaks the clods, 

 and thus prepares the way for the sythe in a cheap, 

 and easy method. 



4. When used upon a light, sandy, or loamy soil, 

 at seed time, it gives permanence, and consistence 

 to the surface, which guards against drought. 



5. When used in the spring upon such winter 

 grains as are exposed to be winter-killed, by the 

 heaving of the frosts, it presses the earth to their 

 roots and thus secures the crops. 



These and many other advantages are ascribed to 

 the roller ; but upon this subject I have no expe- 

 rience, so far as it goes to break clods and press 

 in stones, it will doubtless do well. 



Remarks on the General Principles of Husbandry. 



1. Whatever may be the nature of your soil, and 

 situation of your farm, remember, that there is no soil 

 so good, but it may be exhausted, and ruined by 

 bad tillage, and that there is none so bad, that cannot 

 be rendered fertile by good tillage, even barren heath, 

 if it can be ploughed, and swarded. 



2. The true art of husbandry consists, in suffer- 

 ing no crop to grow upon your land, that will so far ex- 

 haust your soil, as to lessen the value of your succeed- 

 ing crop, whatever profit such a crop may afford you. 



3-. To avoid this, suffer no one crop to grow two 

 years successively, upon the same piece of ground, 

 excepting grass, and buckwheat, without the fer- 

 tilizing aid of rich manures to support the strength 

 of the soil ; and even then, a change of crops will 

 generally do best, excepting onions, carrots, and 

 hemp. 



