used as accelerator for slag cement, 659

flux in Portland cement, 391

Alkali waste, analyses of, 349

used as Portland-cement material, 348-350

Alum, used in manufacturing Keene's cement, 76

Alumina bricks, for kiln-linings, 490

Alumina, clays high in, 491

effect of, in Portland-cement mixtures, 298, 299, 387, 573

silica-alumina ratio in clays, 354

in sea-water, 602

limestones, 313

Portland cement, 299

Ammonia process, see Alkali waste.

Analyses of alkali waste, 349

alumina brick for kiln-linings, 491
anthracite ash, 396

arênes, 637

ash of coke and coal, 396

Analyses of ash, volcanic, 633-636
brick for kiln-linings, 491, 492
calcined magnesite, 155

cement, grappier, 185

, natural, 253–262, 286

, Portland, 397, 575, 577-579
puzzolan, 662, 667, 668

slag, 662, 667, 668

"cement" plaster, 57

chalks, 321

clays for kiln-brick, 491, 492

clays for Portland cement, 325, 350, 355-357, 359, 365, 390, 397

coal ash, 396

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

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

Austrian, 262

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

Belgian, 215

English, 217

"natural Portland" cement, Belgium, 261