.\k\v yoftl mam: MUSEUM 



or u i I be lime Bhould be |fl free from impurities as 



I iron. 



no. 1 from Blair county (Pa.) 

 - dusky (O.) The former is used for window 

 lime flint gl 



matter 09 .05 



1.01 1 



Alumina 02 .4 



ate 165 



arbonate 1.48 41.43 



Lime carbonate 07.23 55.6 



Tic <».\i<l -12 



M"i lure -4 



In the manufacture of tableware lime furnishes a cheap substi- 

 tute for lead. 



Furnace flux 



This ifl one of the commoi of limestone. It is used as 



a flux f*>r both lead and iron ores. In the blast furnace the 

 act: limes' to reduce the iron to its metallic state 



lux the impurities, which pass off as slag. The purer 

 iore efficient will he its action and the cheaper 

 its that the greater the percentage 



of impurities thi Jtone will be required to do the same 



amount of w<»rk. For reasons of economy Mast furnace operat- 



pure but more easily and cheaply obtained 

 lin 



S ..«• tin. prepared by J. M. Ilartmann, 1 



of lim< containing varying amounts of 



silica, lime and of the calculation is m 



ton and fuel at $3.50 a ton, both at 



ml resources of U, B, 1888-84, p. 870, 



