INSPECTION OF COMMERCIAL FERTILIZERS 49 



Definitions and Interpretations Relating to Fertilizers 



The following definitions and interpretations have been adopted as official 

 by vote of the Association of Official Agricultural Chemists of North America 

 at annual meetings held in 1936, 1937 and 1938. 



An acid -forming fertilizer is one that is capable of increasing the residual 

 acidity of soil. 



A non-acid-forming fertilizer is one that is not capable of increasing the 

 residual acidity of the soil. 



Primary fertilizer components are those at present generally recognized 

 by law as necessary to be guaranteed in fertilizers, namely: nitrogen, phosphoric 

 acid, and potash. 



Secondary fertilizer components are those other than the "primary 

 fertilizer components" that are essential to the proper growth of plants and that 

 may be needed by some soils. Some of these components are calcium, mag- 

 nesium, sulfur, manganese, copper, zinc, and boron. 

 Bat manure is the dry excrement of bats. 

 Bat guano is partially decomposed bat manure. 



The word analysis, as applied to fertilizer, shall designate the percentage com- 

 position of the product expressed in those terms that the law requires and permits. 

 Calcium, nitrate (nitrate of lime) is a commercial product consisting chiefly 

 of calcium nitrate, and it shall contain not less than fifteen per cent (15%) of 

 nitrogen. 



Ammoniated superphosphate is the product obtained when superphos- 

 phate is treated with ammonia or with a solution containing free ammonia and 

 other forms of nitrogen dissolved therein. 



Superphosphate is a commercial phosphate, the phosphoric acid (P20 5 ) 

 content of which is due chiefly to mono-calcium phosphate. (The grade that 

 shows the available phosphoric acid should always be used as a prefix to the 

 name. Example: 16 per cent superphosphate.) 



DIRECTORY OF MANUFACTURERS WHO REGISTERED FERTILIZERS FOR 

 SALE IN MASSACHUSETTS IN 1939 



Acme Guano Co., 416 Munsey Bldg., Baltimore, Md. 



Agricultural Laboratories, Inc., Columbus, Ohio 



American Agricultural Chemical Co., 285 River St., North Weymouth, Mass. 



American Cyanamid Co., 30 Rockefeller Plaza, New "i ork, N. Y. 



American Potash & Chemical Corporation, Trona, Cal. 



Apothecaries Hall Co., Waterbury, Conn. 



Armour Fertilizer Works, 80 Eighth Ave., New York, N. Y. 



Ashcraft-W'ilkinson Co., Atlanta, Ga. 



Atkins & Durbrow, Inc., 165 John St., New York, N. Y. 



Ernest J. Bantle, Glastonbury, Conn. 



Barber & Bennett, Inc., Albany, N. Y. 



Barrett Co., 40 Rector St., New York, N. Y. 



F. A. Bartlett Tree Expert Co., 60 Canal St., Stamford, Conn. 



Belmont Gardens, 170 Brighton St., Belmont, Mass. 



Berkshire Chemical Co., 92 Howard Ave., Bridgeport, Conn. 



Bisbee Linseed Co., Inc., Amsterdam, N. Y. _ 



Bisbee Linseed Co., 2100 Lincoln Liberty Bldg., Philadelphia, Penn. 



L. H. Brague, Hinsdale, Mass. 



Joseph Breck & Sons, 85 State St., Boston, Mass. 



Buell Fertilizer Co., Exeter, N. H. 



C & R Sales Co., Worcester, Mass. 



Central Soya Co., Inc., Fort W T ayne, Ind. 



Chilean Nitrate Sales Corporation, 120 Broadway, New \ ork, N. \ . 



Clay & Son, Ltd., Stratford, London, England 



Collins Seed Service Co., 131 Beverly St., Boston, Mass. 



Consolidated Chemical Industries, Inc., W T oburn, Mass 



