INDEX. 693 



Analyses of limestones, used for making hydraulic lime, 175-177, 187 



lime, 122 

 magnesia, 157 

 natural cement, 204-206, 208-211, 213, 



215, 217 

 Portland cement, 314, 321, 326, 329, 333, 



342 



, see also Chalk, Marl, 

 magnesia, 155, 157, 158 

 magnesia brick, 161 

 magnesian limes, 119 

 magnesian limestones, 157, 327 

 magnesite, 152, 153 



calcined, 155 

 marls, 342, 390, 397 



natural cement, American, 253, 254, 255, 256, 257, 258, 259, 260, 286 

 , Austrian, 262 

 , Belgian, 261 

 , English, 261 

 , French, 261 

 , German, 262 



natural-cement rock, American, 204, 205, 206, 208, 209, 210, 211, 213 

 , Belgian, 215 

 , English, 217 

 natural gas, 523 

 "natural Portland" cement, Belgium, 261 . 



rock, Belgian, 215 

 old Portland cements, 575 

 oyster-shell lime, 95 

 oyster-shells, 95 



Parker's cement, see Natural cements, 

 pebbles, flint, 465 



plaster, used in Portland cement, 545 

 plasters, 44, 57 

 Portland cement, American, 397, 577, 578, 579 



, old, 575 



Portland-cement mixtures, 394, 397, 506 

 pozzuolana, 633, 634, 635 

 producer-gas, 525 

 puzzolan cements, 662, 667, 668 

 puzzolanic materials, 633 to 638, 643 

 Roman cements, see Natural cements, 

 santorin, 636 

 shales, see Clays, 

 shell-lirne, 95 

 shells, 95 



slag cement, 662, 667, 668 

 slags, average blast-furnace, 351 

 , for Portland cement, 352 



