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 investment is five times the annual cost of the phosphorus. Furthermore, the addition of phosphorus tends toward enrichment and consequently 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,
