058 NEW YORK STATE MUSEUM 



'No. 1, the C'olton stone, is good. No. 2, Oro Grande, is pass- 

 able. No. 3 is bad. 



12 3 



Lime carbonate 98 94.306 81.67 



Magnesium carbonate .453 1 . 845 2 . 5 



Iron and alumina oxid 1 . 096 . 929 . 27 



Silica, sand, etc 281 .9 8.2 



Moisture.. 051 .038 5.25 



Organic matter and magnesium sul- 

 fate 701 1.37 



Undetermined 116 1.281 .64 



Lime is used in the cane sugar industry chiefly to effect neu- 

 tralization of the acidity in the juices. " Lime is soluble in about 

 780 parts of water at 15° C and in 1500 parts at 100° C. Alcohol 

 dissolves only a trace. Sugar water dissolves it in large quantity, 

 whereby the lime enters into chemical combination with the sugar, 

 forming sugar of lime. This fact is technically employed in 

 separating sugar from molasses. The molasses is treated with 

 lime, and the resulting sugar of lime is decomposed by the action 

 of carbonic acid, forming calcium carbonate and pure sugar. 

 Strontium has however lately displaced the lime in this process. 

 100 parts of cane sugar dissolved in water will dissolve 50-55 

 parts of lime."^ I am informed by Dr F. G. Wiechmann that the 

 lime used by the Brooklyn refineries is obtained from Glens Falls. 



Chlorid of lime 



Limestone which is to be used for this purpose must be very 

 clean, for on this hangs the possibility of making strong and 

 stable chlorid of lime. To satisfy these requirements the lime- 

 stone must be sufficiently pure and thoroughly burned; conse- 

 quently many manufacturers of lime chlorid purchase the lime- 

 stone and burn it themselves. The burned lime should be free 

 from carbonate of lime, and the limestone should have a minimum 

 amount of sand, clay or similar impurities, which in burning do 



1 Frasch. Min. ind. 7 : 495. 



