712 



INDEX. 



United States, structural materials, 1 



total cementing materials, 2 



Van't Hoff, Prof., on constitution of flooring plasters, 69-75 

 Vegetable matter, as retarder for plaster, 65 



, in marls, effects of, 341-343 



, used in wall-plaster, 51-52 



Wall-plasters, 33, 51-52 

 Water, amount present in chalks, 318 

 clays, 378 



granulated slag, 649 

 gypsum, 14, 31 

 limestones, 378 

 marls, 340, 341, 343 

 plaster, 31, 44 

 shales, 378 



required in slaking lime, 120 

 , sea-, effect on Portland cement, 602-603 

 , used in granulating slag, 644-648 

 Wear, resistance of slag cement to mechanical, 670 

 Weight per cubic foot of "cement plaster," 57 

 clay, 305 

 lime, 115 



lime-sand bricks, 142 

 limestone, 305, 310 

 magnesia bricks, 161 

 marl, 340-341 

 plaster, 57 



Portland cement, 551-553 

 shale, 305 



slag bricks, 678, 683 



, see also Specific gravity, Packing weights. 

 Whiting process, regulation of set in slag cements, 658-659 

 Williams mill, 244-245, 466-468, 516 

 Wilder, F. A., on flooring plaster, 75 



rotary calciners for plaster, 49-50 

 Wilkinson, P., on kettle process for plasters, 38-43 

 Wood-fiber, used in wall-plaster, 51 

 Woolson, I., on strength of clay bricks, 145 



lime-sand bricks, 144 



