INSPECTION OF COMMERCIAL FERTILIZERS 47 



Stone Meal. 



o Results reported are the average analyses of two 

 Norwood, Mass. 



iples; one drawn in Beverly and one in 



Note: The commercial value of the plant food contained in one ton of these 

 stone meal products, based upon their content of strong acid soluble potash, 

 phosphoric acid, calcium and magnesium, would be about $1.82 for Menderth 

 and SL03 for the McCriUis Stone Meal. We beheve that these valuations are 

 much in excess of the actual value of the products as som-ces of plant food for the 

 reason that they are so insoluble. 



Definitions and Interpretations Relating to Fertilizers. 



The follo'^ving definitions and interpretations have been adopted as official by 

 vote of the Association of Official Agricultural Chemists at a meeting held in 

 1935. 



The committee recommends that the water-soluble or available manganese 

 in fertilizers be expressed as manganese (Mn). 



The term manganese sulfate, when applied to an ingredient of a mixed 

 fertilizer, shall designate anhydrous manganous sulfate (MnS04). 



Cyanamid is a commercial product composed chiefly of calcium cyanamid 

 (CaCNj), and it shall contain not less than twenty-one per cent (21%) of nitrogen. 



The term "lime" shall not be used in the registration, labehng, or guaranteeing 

 of fertihzers or fertilizing materials, unless the lime is in a form or forms to 

 neutrahze soil acidity. 



DIRECTORY OF MANUFACTURERS WHO REGISTERED FERTILIZER FOR SALE 

 IN MASSACHUSETTS IN 1935. 



Acme Guano Co., 311 Marine Bank Bldg., Baltimore, Md. 



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



American Cyanamid Co., 30 Rockefeller Plaza, New York, N. Y. 



Apothecaries Hall Co., W'aterbury, Conn. 



Armour Fertilizer Works, 120 Broadway, New York, N. Y. 



Ashcraft-Wilkinson Co., 601 Trust Co. of Georgia Bldg., Atlanta, Ga. 



Associated Chemical Co., Baltimore Trust Bldg., Baltimore, Md. 



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



Baker Castor Oil Company of Delaware, 120 Broadway, New York, N. Y. 



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



Barrie Laboratories, Inc., 272 Center St., Newton, Mass. 



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



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



Berkshire Chemical Co., Bridgeport, Conn. 



Woodworth Bradley, Inc., 156 South Main St., Providence, R. I. 



Brague, Inc., South St., Hinsdale, Mass. 



Joseph Breck & Sons Corp., Boston, Mass. 



C. E. Buell, Inc., 6 Beacon St., Boston, Mass. 



Cairo Meal and Cake Co., Cairo, 111. 



Chilean Nitrate Sales Corp., 120 Broadway, New York, N. Y. 



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



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



Consolidated Rendering Co., 178 Atlantic Ave., Boston, Mass. 



Davey Tree Expert Co., Kent, Ohio. 



Davison Chemical Co., 1801 Baltimore Trust Bldg., Baltimore, Md. 



