INDEX. 703 



Krupp ball mills, 455-457 

 Krupp tube mills, 462-463 



Labor, cost of, see Costs of labor. 



Lafarge cement, 185-186 



Leblanc process, see Alkali waste. 



Le Chatelier, H., on constitution of hydraulic limes, 174-175 



Portland cement, 569-570, 573, 574 

 effect of sea-water on cement, 601 

 expansion of magnesia brick, 161-162 

 setting properties of Portland cement, 572 

 Lewis, F. H., on effects of plaster, 537, 538, 544 

 Lignite used for producer-gas, 524-526 

 Lime, effects in Portland cement, 384-386, 496, 566-575 

 Lime, hydrated, composition of, 119 



, manufacture of, 124-127 

 , methods of lime-slaking, 120-122, 124-127 

 , physical properties of, 128 

 Lime of Teil, see Hydraulic limes. 

 Lime, slaked, see Limes, hydrated. 

 Lime carbonate, see Limestones. 

 Lime chloride, used as cement-retarder, 546-547 

 Limes, analyses, 116, 118, 119 

 , classification of, 97-98 

 , composition, 115-119 

 , costs of manufacture, 106, 108, 109-112 

 , fuel consumption in burning, 98-99, 101, 103, 106 

 , groups of, 97-98 

 , hydraulic, see Hydraulic limes. 

 . kilns used for, 99-108 

 , magnesian vs. high-calcium, 115 

 , methods of manufacture, 98-109 

 , physical properties, 120-123 

 , raw materials, 88-95 



statistics of production, 112-114 



Limestones, analyses of, 157, 175-177, 187, 203-213, 215, 217 

 , composition of, 6, 89 

 , cost of excavation, 109, 219-221, 378-379 

 , distribution of, 91-94 

 , excavating, 109, 219-221, 367-375" 

 , impurities of, 91, 309-310 

 , magnesian, 6, 90-91, 157 

 , mining, 219-221, 375 ^ 

 , modules of, see Sepatria. 

 , origin of, 88-89 

 , properties of, 310-311 

 , quarrying, 109, 219-221, 367-375 

 , used for hydraulic lime, 175-177, 187 

 , used for lime, 88-95 



