6o 



THE POPULAR SCIENCE MONTHLY 



Pooeland Farm : Clover and timothy, 1913. Regular treatment. 



land, where soil enrichment has been practised for twelve years, during 

 the last four years the value of the produce from the land receiving 

 phosphorus has been twice as much as that from the untreated land. 

 In other words, $2.50 invested in phosphorus has brought the same gross 

 income as $250 invested in land; and even the interest on the land in- 

 vestment is five times the annual cost of the phosphorus. Further- 

 more, the addition of phosphorus tends toward enrichment and conse- 

 quently toward the protection of the capital invested in the land. 



It is sometimes suggested by people who have no intelligent basis 

 for such an opinion, that the result secured by an experiment station 

 upon relatively small tracts of land could not be secured in practical 

 agriculture. In part to disprove such incorrect and unjust statements, 



