OP AGRICULTURE. 117 



glasses will not thrive, more attention should be 

 given to the introduction of annuals and biennials, to 

 be cut for hay. The annual meadow-grass, the crop- 

 grass, and biennial rye- grass, have been cultivated 

 where those of a more permanent character will not 

 take root. The different varieties of millet, oats cut 

 in full bloom, and corn sown broad- cast, all make 

 good substitutes for hay. 



EXPERIMENTS. 



Every farmer should make repeated experiments 

 on his own lands, with various kinds of grass, that 

 he may determine which are best adapted to his soil. 

 Then it should be an established rule : 



1. Never to allow a field to be out of clover, or some 

 kind of grass, when it is not occupied by other crops. 



2. Never to miss an opportunity of plowing under 

 clover, or grass sod. It is the cheapest w r ay of 

 enriching the soil. 



CHAPTER XV L 



THE TOBACCO CROP. 



The following account of this subject is the result 

 of the writer's personal experience and observation 

 on the best methods pursued by some of the most 

 successful planters in Virginia, North Carolina and 

 Kentucky. 



CLIMATE. 



Tobacco requires a long summer season to bring it 

 to maturity; Hence, so far as our own country is 



