168 POTATO CULTUKE. 



worth of fertility. Sell 100 bushels of wheat at present price, 

 and you get $75.00, so but $21.27 leaves the farm. Sell 7i 

 tons of timothy hay for $75, and f 41.10 leaves the farm in 

 fertility. At 25 cents a bushel, you see you sell far less fer- 

 tility than in selling hay at $10 a ton. 



I have now gone over the whole subject, and this chapter 

 closes our little book, unless friend Root delays the publish- 

 ing so that I can get in a final chapter, giving the substance 

 of this year's experience. 



The writer has tried to encourage you to do your very best, 

 and to think and study ; and, more than all, has he tried not 

 to mislead you on any point. Please read very carefully, 

 and be suj-e you carry out fully every little particular, if you 

 undertake to change to some new practice. 



