708 



INDEX. 



Richardson, C., on constitution of Portland cement, 567-575 

 phosphorus in cement mixture, 389 

 specific gravity of natural cement, 263 

 Ring kiln, 106-108, 472-474 

 Rock-crushers, see Crushers. 

 Rock-emery mill, 35, 125, 239-241 

 Rock excavation, see Excavation. 

 Rohland, on set of plasters, 64 

 Roman cements, 214, 217 

 Roofing slate, see Slate. 

 Rotary calciner, see Calciners. 



drier, see Driers. 



kiln, see Kiln. 



Sabin, L. C., on properties of lime, 123 



natural cement, 263-265, 273, 276 

 Portland cement.. 539, 540, 600 

 Salt, brines as sources of magnesia, 158-159 

 , effect on natural cement, 267 



Portland cement 598-601 

 Sampling, marl deposits, 343-346 



see also Examination. 

 Sand cement, 592-597 

 Sawdust, used as plaster-retarder, 64 

 Schiebler process, 157 

 Schofer kiln for lime, 101 



Portland cement, 473 

 Schwarz kiln, 477-479 



Schwarz process for lime-sand brick, 136-137 

 Scott's cement, 190-193 

 Seasoning clinker, 235-236 

 Sea-water, as source of magnesia, 158-159 



, effect on Portland cement, 602-603 

 Selenite, 15 

 Selenitic lime, manufacture, 190-191 



, properties, 191-193 

 Separators, Berthelet system, 244-246 

 , in coal-pulverizer, 520 



natural-cement plants, 244-246 

 Portland-cement plants, 426-428 

 Septaria, 217 



Shales, analyses of, 357-379 

 , excavating, 370-374 

 , origin, 353 



Shell-lime, analyses of, 95 

 Shells, analyses of, 95 



, in marl deposits, 339 

 , used for lime-burning, 94-95 

 Shovel, steam, use of, 370-374 



