20 CONTROL SERIES NO. 118 



AGRICULTURAL LIME PRODUCTS 



Manufacturers and Brands 



During 1943, 17 firms registered for sale in Massachusetts 39 brands of lime 

 products, manufactured and sold for neutralizing acid soils, and one brand of 

 gypsum. The products are grouped as follows: 



Hydrated or slaked lime 23 



Pulverized and ground limestone 15 



Lime ashes 1 



39 



Gypsum 1 



The analytical results which appear in this bulletin represent officially drawn 

 samples secured by the same sampling agents who drew the samples of commer- 

 cial fertilizer which served for the inspection of that commodity; the samples 

 therefore came from every section of the state and are, we believe, representative 

 of the lime products sold in Massachusetts as soil amendments. 



We were not successful in securing samples of the following brands: 



Brewer & Co., Inc., 45 Arctic Street, Worcester, Mass. 



Lime Kiln Ashes 



Producto Agricultural Lime 

 Kelley Island Lime & Transport Co., 1122 Leader Building, Cleveland, Ohio 



Tiger All Purpose Hydrated Lime 

 Lawrence PorUand Cement Co., Thomaston, Maine 



Dragon "Mainrok" Land Lime 

 Limestone Products Corporation of America, Newton, N. J. 



"Lime Crest" Brand Calcite Hydrated Lime 



"Lime Crest" Brand Calcite Pulverized (Pulverized Limestone) 

 New England Lime Co., Adams, Mass. 



Nelco Agricultural Hydrated Lime 



Nelco Agricultural Ground Limestone (Canaan, Conn.) 

 Rockland-Rockport Lime Co., Inc., Rockland, Maine 



R-R Ground Limestone, Grade C 



R-R Land Lime, Grade C 

 Solvay Process Co., Syracuse, N. Y. 



Solvay Pulverized Limestone 



Variations and Deficiencies Found in the Composition of Lime Products 



Of the lime products effective in neutralizing soil acidity, about 88 per cent 

 of the samples analyzed fully met the minimum guarantee; of the 20 samples 

 of ground limestone, 3 showed deficiencies. Most of the deficiencies were not 

 of a serious nature as the companion ingredient was present in sufficient e.xcess 

 to more than make up the full neutralizing value of the product as based on the 

 stated guarantee. The same may be said of the hydrated lime products where 

 one out of 17 samples showed a deficienc\-. The tables of analyses show the 

 extent of variations from the guaranteed composition. 



