xii TABLE OF CONTENTS. 



phur in Coal-gas, 418 ; Illuminating-gas from Night-soil and Dead Ani- 

 mals, 418 ; Walking-cane containing a Candle, 419. Heating : A Reflect- 

 ing-plate for Open Grate Fires, 419 ; Improvement in Fire-places, 420 ; 

 Ventilation : Method of Cooling the Air, 420. 



(C.) CLOTHING AND ADORNMENT. 



Cloth of Feathers for Ladies' Cloaks, etc., 422 ; Water-proofing Umbrellas, 

 etc., 430. 



(d.) THE LAUNDRY. 



Cheap Soap for Ordinary Articles and Woolen Factories, 421 ; Tyrian-pur- 

 ple Ink for Marking Linen, 429. 



(e.) THE TABLE. 



Apparatus and Utensils : Cleaning Silver-ware, etc., with Potato-water, 

 424. Preparation of Food for the Table : Cooking Meat by Cold, 422 ; 

 Cooking Leguminous Vegetables, 426. Preservation: Antiseptic Action 

 of SalicyUc Acid, 423 ; Preservative Action of Salicylic Acid, 425 ; Glycer- 

 ine-gelatin for Protecting Preserved Fruit, 427 ; Ice-cellars on Brainard's 

 Plan, 427. Substances Used as Food : Production of Madeira Wine, 423 ; 

 Detection of Oleomargarine in Butter, 424 ; Solidified Milk, 425 ; Action of 

 Cold on Milk, 425 ; Substitute for Extract of Meat and Preserved Meat, 427. 



(f.) MISCELLANEOUS. 



New Life-saving Device, 412 ; Substitute for Persian Insect-powder, 424 ; 

 Explosions in Flour-mills, 428 ; Increasing the Adhesiveness of Court-plas- 

 ter, 430. 



L. MECHANICS AND ENGINEERING (ccxiv) 431 



(a.) MATERIALS. 



Mortars, Cements, and Slags : New Hydraulic Cement, 470 ; Dubois' 

 Peinture Hydraulique, 471 ; Metal : Iron and Steel for Boilers, Bridges, 

 etc., 432; Cast Steel for Locomotive Boilers, 432; Bessemer Process with 

 Hot Blast, 432 ; Extended Service of a Furnace, 433 ; Revolving Furnace 

 Bars, 433. Wood: Preservation of Wood, 431; Carbolic Acid and the 

 Preservation of Wood, 431 ; New Process for the Preservation of Wood, 

 431; New Process for Injecting Timber, 432. 



(b.) CONSTRUCTION. 



Vessels: Vertical Movement of Vessels under High Speed, 472. Tele- 

 graphs: Underground Telegraph Lines, 464. Buildings: Effects of Tem- 

 perature on the St. Louis Bridge, 466 ; the Construction of Revolving Draw- 

 bridges, 467 ; the Proper Construction of Sewers, 467 ; a New Dry-dock, 

 468 ; the Effects of Levees, 469. Mines : American Mining Methods, 434. 

 Light -houses and Signals: Steam Fog- whistles, 459; the Electric 

 Light-house at South Foreland, 460 ; the Use of Gas for Light-houses, 461 ; 

 the Electric Light for Signaling, 461 ; Fog-signaling by Explosives, 462 ; 

 Carrier-pigeons, 463. 



(C.) MOTORS. 



Coal and Fuel in General : Peat as Locomotive Fuel, 447. Steam and 

 Engines : Statistics of Steam, 435 ; Casing for Steam-pipes, 435 ; Anti- 

 fouling Composition, 435 ; Prevention of Boiler Incrustations, 436 ; Appa- 

 ratine, a New Anti-incrustator, 436 ; Incrustation of Boilers, 437 ; Pressure 



