Note 123 — Chapter XII · FERTILIZERS.

In this connection it may be of interest to call attention to the fact that the Twelfth Census shows less than a fifth of the sodium nitrate brought into the United States goes into the fertilizer trade. Moreover, the production of ammonium salts by the extensive coke and gas plants of the country has been practically nil not because of any inherent difficulties in making them or because the cost of production has been high, but because the market demands in this country have been too small.