21'2' THE SUGAlt BEET. 



The reasons for this have been before explained. The 

 tri- annual system existed when fallow land was advo- 

 cated, but has now been abandoned, and the most popu- 

 lar is the quadr-annual, which has many advantages. 

 The land receives a sufficient variety of plants to 

 produce a most excellent effect. The number of 

 acres of land under cultivation varies with the system 

 of rotation, and the complications resulting inci'ease 

 in the same proportion. It would be of little interest 

 to give all the combinations that have been adopted in 

 Europe, but a few we consider important. The follow- 

 ing is adopted in the northern part of France : — 



1st year Wheat 



2d year Beets 



3d j'ear , Oats 



4tli year Clover 



Or, again : — 



1st year Wheat 



2d year Grass 



3d year Flax, colza 



4th year . . ' . . . Beets 



Or, when large quantities of land are at one's disposal, 

 a five-year system can be and is adopted : — 



1st 3'ear 

 2d year 

 3(1 3'ear 

 4 111 year 

 5th year 



Wheat or rye 

 Beets 

 Barley 

 Clover - 

 Wheat 



The wheat in this case being the object of rotation. 

 Then again on some farms we have visited tobacco 



