by the fertilizer people. Tons Sold 



. . 47,343 



Pulverized and ground limestone ' 



5,163 

 Hydrated line 



Miscellaneous (caustic lime, lime ashes, and shell lime) . ^> 



Total 



Explanation of Tables of Analyses 



52,891 



Table I "Proportion of total oxides as carbonates." The data furnished m 



C ^m 525— * - »*— Mcates to what extent the pl0d,,c 



has absorbed carbonic acid from the air. 



Tables II and III "Carbonates of calcium and magnesium. The ngures in 

 th£ cotnL are elusive of the small amounts of calcium and magnesiun > com- 

 bted as basic silicates; these are readily soluble in mineral acid solutions but 

 obviously should not be classed as carbonates. 



Under "Mechanical analysis" the figures represent in round numbers the per- 

 centage of product that would pass the various meshed sieves mentioned 



The limestone products have been published in two groups or • grafts (see 

 tables IlTdllDaccording to fineness of grinding and to %$£££^ 

 voted by the Association of Official Agricultural Chemists at their 1936 meeting. 

 Tables I and II and III. "Neutralizing value expressed in terms of calcium 

 oxMe" represents the acid neutralizing value of both the magnesium and the 

 calcium The figures in the "percent" column are obtained by a direct titrat on 

 wth standard acid. The "pounds in one ton" are secured by multiplying the 

 figures in the "percent" column by 20. 



"Insoluble matter" represents material which is insoluble in dilute hydrochlonc 

 acid to which a few drops of nitric acid have been added. 



The figures in parenthesis following the brand name show the number of samples 

 collected and analyzed. 



