INDEX. 654 Cement—Continued. Page. Retarded sets— Alpha_________________________________________________________ 497 Star__________________________________________________ 498,506-514 Storm King.............________________ _____________ _____ 499,517 Dyckerhoff________________________ ____:___________________ 500,501 Josson ................_................................... 502 Steel................................................... 503 Austin_______________________________________________________ 504 Bonneville Improved____________________________________________ 505 Norton_________________________________________________________ 506 Whitehall______________________________________________ 515,516,519 Newark and Rosendale___________________________________________ 518 Retarded sets, grouts— Alpha__________________________________________________________ 520 Dyckerhoff,................................................ 520 Josson ____________________________________________________ 521 Steel_______________________________________________________ 521 Bonneville Improved____________________________________________ 522 Hoffman______________________________________________________ 522 Mankato_______________________________________________________ 523 Norton _____________________________________________________ 523 Effect of “ restrainer — Remarks_____________________________________________________ 524 Absorption of water by grouts_________________________________ 525 Compression tests of grouts_______________________________ 526-529 Loss in weight of grouts_______________________________________ 529 Cements which set in air at different temperatures— Remarks_______________________________________________________ 530 Compression tests________________________________________ 531-567 Remarks___________________________________________________ 568-570 Mean results_______________________________________________ 570-574 Resume of results__________________________________________ 574-577 Comparison of results_____________________________________ 577-583 Cements which set at ordinary temperatures— Compression tests______________________________________ 584-597 Cements and mortars after heating— Compression tests__________________________________________ 598 Halves of tensile briquets, compression tests of------------------- 599 Concrete and mortar— 12-inch cubes from Watertown Arsenal_______________________ 600-602 Elastic properties_____________________________________ 603-608 12-inch cubes from W. W. Clarke & Son______________________ 611,612 Prisms from Boston Transit Commission______________________ 619-621 Adhesive resistance of steel bars in concrete__________________ 620 Compression test of yellow-pine push bars embedded in concrete. 622 Cement rock: Analysis, chemical______________________________________________ 474 Compression tests_________________________________________________ 615 Chain, retraction, for gun carriages: Proof stress_______________________________ ___________________ 378 Tensile tests._________________________________________________ 379,380 Cloth, silk cartridge______________________________________________ 644 Concrete and mortar: 12-inch cubes from Watertown Arsenal_________________________ 600-602 Elastic properties_______________________________________ 603-608 12-inch cubes from W. W. Clarke & Son___________...____________ 611,612 Prisms from Boston Transit Commission__________________________ 619-621 Adhesive resistance of steel bars in concrete______________________ 620 Compression test of yellow-pine push bars embedded in concrete_ 622 Copper cylinders for pressure gauges........................... 459-461 Endurance of rotating shafts, steel: Endurance test_____________________________________________________ 633 Metal from shafts, tensile tests_______________________________ 637-643 Eyebars, steel: Chemical analysis and tensile tests___________________________ 409^14 Gas check disks______________________________________________________ 65