xii TABLE OF CONTENTS. 



proof Composition. 523. Iron: Forging large Masses, 301 , Improved Man- 

 ufacture, 892; Rusting of, Cause, 302, Prevention, 391 ; Effect of Cold on, 

 894; Bessemer and Beaton Steel, 890; Siemens's, 390 ; Restoring burnt 

 Steel, 390. Zinc: for Roofing, 395* Wood : Preserving by Salt, 420 ; Pro- 

 tection against Dry Pot, 374. 



CONSTRUCTIONS. 

 Masonry : Dampness in Walls, 400, in Tunnels, 401 ; Rendering Walls 

 Water-tight, 408. Paving : with Asphalt, 408. 



Canals : Ship Canal across Cape Cod, 422 ; across New Jersey, 423 ; the 

 Isthmus of Darien, 143. Ships : Inglefield's Steering Apparatus, 418 ; Coat- 

 ing for Bottoms, 4G3. Tides : Flux Motor, 418. 



MOTORS. 

 Steam Engines : Jackets for Boilers, 398 ; Deposits in Boilers, 398. Am- 

 monia Engines, 531. Railways : Single Rail, 396 ; Narrow Gauge, 39G ; 

 Rolling of Axles, 393 ; Testing of Axles, 393 ; Heating Cars, 395, 512 ; Lo- 

 comotive Brake, 397. Signals : Color for, 417 ; Intermittent Light, 52G ; 

 Holmes's Signal Light, 527. Coal : Spontaneous Combustion, 399 ; "Weath- 

 ering, 399 ; Burning Dust, 401. 



EXPLOSIVES. 



Gunpowder: For killing Whales, 411; New kind, 413; Comparison with 

 Steam, 41C Dynamite and Dualin, 415 ; Dynamite and Gun-cotton, 415 ; 

 in Well-boring, 415. Gun-cotton: Compressed, 41G ; Explosion of, 420 ; 

 Rendering Non-explosive, G9. Lithofracteur, 419. Pertuiset Powder, 419. 

 Torpedoes, 447. Explosive Balloons, 419. Triangular Holes for Blast- 

 ing, 422. 



L. TECHNOLOGY 425 



THE LIBERAL ARTS. 



Printing. Paper: Pearl-hardener, 481; Perforating Machinery, 493; 

 Wood-pulp, 482, 484 ; from Oat refuse, 488 ; Wetting for Press, 487 ; Parch- 

 ment, 488. Ink : Red or Violet Fuchsine Varnish, 489 ; Drying, 493 ; Print- 

 ing on Tin, 493; Stamping Ink, 530. Type: Steel, 494. Writing, Draw- 

 ing, and Copying : Ink, 495 ; Removal of Blotches, 495 ; Secret Ink, 49G ; 

 Fixing Crayons, 497; Copying Drawings, 499 ; Pictures, 497. Engraving 

 and Carving : by Sand Blast, 454 ; Action of hot Glass on Diamond, 455. 

 Modeling and Casting: Gabbro Mass, 457; Mixing Alkaline Salts with 

 ( rypsum, 155 ; improved Mode of Casting, 455. Photographing : on Wood 

 for Engraving, 49G ; Copying Pictures by Collodion, 497 ; Copying Draw- 

 ings, 499 ; Glass for, 498 ; Tapioca Paper for, 498 ; Restoring faded Prints, 

 503; Albert type Process, 500; Woodbury, 501. 



THE HOUSEHOLD. 

 Sec Household Economy. 



CLOTHING AND WEARING APPAREL. 



Water-proofing : Starch, 478 ; Chinese Composition, 479 ; for Clothing, 

 17'.; fur Cloth, 480; Hydrofugine, 517. Fire-proofing, 375; Antiflamine? 

 480; Solution for, 523. Weaving : Improved Loom, 425; Smith's Loom, 

 426; Wearing Stockings, 426. Sizing: for Cotton Yarn, 441 ; Cheap, 441; 

 Substances nsed in, 460. Starch : Potato. 434; Rice, 442; Water-proof. 



