INSPECTION OF COMMERCIAL FERTILIZERS 45 



these constituents. The only elements which the Stone Meals furnish which 

 may have a slight fertilizing value on Massachusetts soils are potash, calcium 

 oxide, magnesium oxide, and phosphoric acid; but the agricultural value of even 

 these four constituents from this source is open to the gravest doubts for the 

 reason that they are present largely as silicates and therefore but very slowly 

 soluble in soil solution. Wolling finds that the average soil at a depth of 1.5 

 meters (4.92 feet) contains from 3.84 to 14.6^^ of carbon dioxide; yet even the 

 larger amount would have much less dissolving effect than strong hydrochloric 

 acid diluted with an equal volume of water (this gives a strength of 22.86% 

 hydrochloric acid), which was used in continuous digestion for ten hours at a 

 temperature of boiling water in making a part of the analyses reported above. 

 Assuming, therefore, that the amounts of the four plant food constituents dis- 

 solved by the 1-1 hydrochloric acid represent the maximum that would become 

 of value during a reasonable length of time (say five to ten years), the highest 

 value that could be given to these Stone Meals would be $1.72 per ton for Men- 

 derth and 90 cents per ton for McCrillis Stone Meal. 



DIRECTORY OF MANUFACTURERS WHO REGISTERED FERTILIZER FOR SALE 

 IN MASSACHUSETTS IN 1933. 



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



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



American Cyanamid Co., 535 Fifth Ave., New York, N. Y. 



American Reduction Corp., Suite 2041, 105 West Adams St., Chicago, III. 



American Soda Products Co., 121 East Oak Ave., Moorestown, N. J. 



Apothecaries Hall Co., 8-24 Benedict St., Waterbury, Conn. 



Armour Fertilizer Works, 10 East 40th St., New York, N. Y. 



Ashcraft-Wilkinson Co., Atlanta, Ga. 



Associated Chemical Co., Hagerstown, 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., 84 State St., Boston, Mass. 



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



Berkshire Chemical Co., Bridgeport, Conn. 



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



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



Buckeye Cotton Oil Co., Cincinnati, Ohio. 



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



Cairo Meal and Cake Co., 46th St. and Sycamore, Cairo, 111. 



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



Clay & Son, Ltd., Temple Mill Lane, Stratford, London, England. 



Cobwell Reduction Co., Inc., P. O. Box 1081, Syracuse, N. Y. 



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



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



Consumers Import Co., Inc., 115 Broad St., New York, N. Y. 



Rowland T. Cresse, 127 Governors Ave., Medford, Mass. 



Curley Brothers, Main St. & North Ave., Wakefield, Mass. 



Daggett Chocolate Co., 408 Main St., Cambridge, Mass. 



Dairies By-Products Co., 1109 Royster Bldg., Norfolk, Va. 



Davey Tree Expert Co., Kent, Ohio. 



Dutton Sales Co., 140 Front St., San Francisco, Cal. 



Eastern States Farmers' Exchange, Box 1482, Springfield, Mass. 



Thomas W. Emerson Co., 213-215 State St., Boston, Mass. 



Em.poria Elevator & Feeding Co., Emporia, Lyon County, Kan. 



Essex Fertilizer Co., 178 Atlantic Ave., Boston, Mass. 



Foodndrink Co., 24 Milk St., Boston, Mass. 



Ford Motor Co., By- Product Sales Dept., 3674 Schaefer Road, Dearborn, Mich. 



L. T. Frisbie Co., New Haven, Conn. 



H. L. Frost & Co., 20 Mill St., Arlington, Mass. 



Goulard & Olena, Inc., 140 Liberty St., New York, N. Y. 



T. J. Grey Co., 16 South Market St., Boston, Mass. 



Heil Co., 3000 West Montana St., Milwaukee, Wis. 



Thomas Hersom & Co., New Bedford, Mass. 



Humphreys-Godwin Co., Memphis, Tenn. 



International Agricultural Corp., 38 Chauncy St., Boston, Mass. 



John Joynt, Lucknow, Ontario, Canada. 



Koppers Products Co., Koppers Bldg., Pittsburgh, Penn. 



M. F. Lansill, 86 Charles River Parkway, Newton, Mass. 



L. B. Lovitt & Co., 1004 Falls Bldg., Memphis, Tenn. 



Lowell Fertilizer Co., 178 Atlantic Ave., Boston, Mass. 



Maine Farmers Exchange, Inc., 708 Grain & Flour Exchange, Boston, Mass. 



Maplevale Leafmold Co., East Kingston, N. H. 



D. C. McCrillis, Stoney Brook (Weston), Mass. 

 Menderth, Inc., 126 State St., Boston, Mass. 



Merrimac Chemical Co., Inc., Everett Station, Boston, Mass. 

 Miller Fertilizer Co., 1801 Baltimore Trust Bldg., Baltimore, Md. 

 Milwaukee Sewerage Commission, P. O. Box 2079, Milwaukee, Wis. 



