42 CONTROL SERIES NO. 114 



AGRICULTURAL LIME PRODUCTS 



Manufacturers and Brands 



During 1942, 18 firms registered for sale in Massachusetts 42 brands of lime 

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

 and one brand of agricultural talc. The products are grouped as follows: 



Hydrated or slaked lime . . . . .23 



Pulverized and ground limestone . . . .18 



Lime ashes ........ 1 



Total 42 



Gypsum ........ 1 



Talc 1 



The analytical results which appear in this bulletin represent officially drawn 

 samples secured by the same sampling agents who drew the samples of commercial 

 fertilizer wh'ch served for the inspection of that commodity; the samples there- 

 fore 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. 



Green Mountain Handy Hydrate 



Lime Kiln Ashes 



Producto Agricultural Lime 

 Conklin Limestone Co., Inc., Canaan, Conn. 



High Magnesium Agricultural Ground Limestone 

 L. A. Howard & N. L. Howard, Proctorsville, Vt. 



Howard Talc 

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



Tiger All Purpose Hydrated Lime 

 Solvay Process Co , Syracuse, N. V. 



Solvay Pulverized Limestone 

 United States Gypsum Co.. 300 West Adams Street, Chicago, 111. 



USG Red Top Hydrated Lime 



Variations and Deficiencies Found in the Composition 

 of Lime Products 



Of the lime products effective in neutralizing soil acidity, about 64 per cent of 

 those analyzed fully met the minimum guarantee; of the 20 ground limestone 

 products, 8 showed deficiencies. Most of the deficiencies were not of a serious 

 nature as the companion ingredient was present in sufficient excess to more than 

 make up the full neutralizing value oi the product as based on the stated guarantee. 

 The same may be said of the hydrated lime products where 6 out of 19 samples 

 showed deficiencies. The tables of analyses show the extent of variations from 

 the guaranteed composition. 



