INSPECTION OF AGRICULTURAL LIME PRODUCTS 

 FOR THE SEASON OF 1927 



BY H. D. HASKINS, OFFICIAL CHEMIST, ASSISTED BY M. W. GOODWIN 

 AND JOHN W. KUZMESKI 



MANUFACTURERS AND BRANDS 



During 1927, 27 different brands of lime and 3 brands of gypsum or land plaster 

 were registered in Massachusetts by 22 firms or individuals. The products may 

 be grouped as follows: 



Hydrated or slaked lime 

 Lime ashes 

 Precipitated lime 

 Ground limestone 

 Ground shell lime 



Gypsum or land plaster 



14 

 3 

 1 



27 

 3 



With two exceptions all of the products registered have been analyzed during 

 the year. This work is carried on under the same rules and regulations and with 

 the same care that characterizes the annual fertilizer control service. 



Products Not Sampled 



Atlantic Gypsum Products Co., Portsmouth, N. H., Atlantic Agricultural Gypsum. 

 Edward Bryant Co., Boston, Mass. Tolman Lime Wood Ashes. 



HYDRATED OR SLAKED, PRECIPITATED AND AIR-SLAKED 

 LIMES AND LIME ASHES 



Reference to Table I shows that the guarantees on these, the more active forms 

 of lime, have as a whole been well maintained. Only one deficiency was noted, and 

 this was of minor importance. The Agricultural Hydrated Lime, manufactured 

 by the Lee Lime Co., showed a shortage of 3.02 per cent in magnesium oxide. 

 This was partially made up by an overrun of 1.91 per cent in calcium oxide, so 

 that the actual deficiency was only 1.11 per cent, or 22 pounds in a ton, which would 

 have a value of only 12 cents. 



GROUND LIMESTONE AND GROUND SHELL LIME 



Only one brand of ground limestone was found deficient. The Monarciue 

 Brand, put out by Clifford L. Miller, showed a shortage of 1.96 per cent magnesium 

 oxide. This was in part made up by an overrun in calcium oxide so that the 

 shortage was only 1.59 per cent, equivalent to about 32 pounds in a ton, which 

 M'ould have a value of about 12 cents at the plant, this computation being based 

 on the actual cost of 100 pounds of effective oxides, f .o.b. plant. 



Thedegree of fineness of the ground limestone and shell limeproducts is graphically 

 shown in the following chart. The very fine is that portion which passes an 80- 

 mesh sieve; the fine, that which passes a 40-mesh but is caught by an 80-mesh 

 sieve; the coarse, "that which is caught by a 40-mesh sieve. 



