29 



aim of the manufacturer to eliminate chlorine from his tobacco brands, 

 and it is also important, when furnishing potash in form of carbonate 

 to eliminate soluble sulfates. 



Thirty-eight analyses, representing twenty-nine brands of to- 

 bacco fertilizer, with potash guaranteed as sulfate, showed total water 

 soluble potash 7.07%, of which 5.92% was from sulfate and 1.15% 

 from muriate. Ten analyses, representing eight brands, with potash 

 guaranteed as carbonate, showed total water soluble potash 7.91%, 

 of which 5.40% was as claimed, .74% was as muriate and 1.97% 

 as sulfate. Two cases were found where evidently an error occurred 

 in making the goods: 



Pan American Fertilizer Co. Market Garden Standard No. 208. 

 6% of potash was guaranteed, all as sulfate. Enough chlorine was 

 present to unite with all of the potash found, 6.34%. 



Rogers Alanufacturing Co. High Grade Tobacco Grower, Veg- 

 etable and Carbonate Formula. Nos. 94-404-632. 5.50% of potash 

 was guaranteed as carbonate. Enough chlorine was found to unite 

 with .49% of potash and enough soluble sulfates were present to 

 unite with the remainder of the potash. In this case there was un- 

 doubtedly some carbonate of potash present, as carbonic acid was 

 driven off upon the addition of hydrochloric acid to the fertilizer. 

 The soluble sulfates may have come from ammonium sulfate or dis- 

 solved phosphates used in the mixture. 



NEW MINERAL FERTILIZER AND STONEMEAL. 



Two samples of New Mineral Fertilizer, manufactured by the 

 New Alineral Fertilizer Co., 11 South Market St., Boston, A4ass., 

 were taken by our inspectors. One sample was procured from stock 

 carried by the manufacturer, the other from W. L. Stone & Sons, 

 South Sudbury, Mass. The analyses showed the presence of .11% 

 nitrogen, .13% total phosphoric acid and .16% potash soluble in 

 dilute hydrochloric acid. According to the table of trade values, 

 the plant food in a ton of this product would value commercially 

 about 68 cents. 



Three samples of Stonemeal put out by the Stonemeal Fertilizer 

 Co. of Paterson, N. J., and forwarded at our request, were analyzed 

 and the detailed results of analysis will be found in the tables under 

 the headings "Fertilizers for Private Use." These products carry a 

 little more potash and phosphoric acid than does the New Mineral 

 Fertilizer. They also carry from 17.38% to 23.51% of calcium and 

 magnesium oxides, these two elements being present largely in the 

 form of carbonate. The products value commercially from $1.62 

 to S2.64 per ton, including an allowance of 40 cents for every 100 lbs. 

 of calcium oxide which the products contain. Although our in- 

 spectors have found but little of these ground rock products in the 



