The Franklin Journal, and American Mechanics' Magazine1867 |
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66 date acid apparatus bearing Bessemer Bessemer process boiler bottom bridge broken stone cables carbonate carbonic acid cars cast iron centre chrome alum coal Coleman Sellers color condenser construction copper cost crystals cylinder depth diameter disk East River effect electricity employed engineer equal experiments feet feldspar flue Franklin Institute furnace give gneiss gravel gravel road gutter heat hundred inches increased Journal length lens less light lime MacAdam machine magnesia material matter Mean daily Mechanics Messrs metal mica miles mineral Mont Cenis nearly observation obtained ordinary Park Philadelphia piers plate portion pounds practical pressure produced quantity quarry Railroad rails railway result river rollers rolling safety-valve schist screen sesquioxide shaft shellac side solution specimens square inch steam steel strut sulphur surface Telford thickness tion tons tube tunnel ventilation weight wheels wrought iron yards