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Page 94
Not ordinary houses , mind you , but remarkable structures built of solid concrete , and created in a single day by the use of a wonderful system of iron molds . The invention of the concrete house is likely to prove one of Edison's ...
Not ordinary houses , mind you , but remarkable structures built of solid concrete , and created in a single day by the use of a wonderful system of iron molds . The invention of the concrete house is likely to prove one of Edison's ...
Page 146
In his hand is a small bar of iron , wound with wire and connected overhead to electric current . Before him is a pile of unfin- ished steel washers , one - sixteenth of an inch thick . He sets one of them against the end of his iron ...
In his hand is a small bar of iron , wound with wire and connected overhead to electric current . Before him is a pile of unfin- ished steel washers , one - sixteenth of an inch thick . He sets one of them against the end of his iron ...
Page 419
FIGHTING THE RUINOUS IRON - RUST By dissolving these two substances together in water , and. VARIOUS STEEL OBJECTS IMMERSED IN FERROXYL JELLY . SCREW , CUT NAIL , AND WIRE NAIL IMMERSED IN. view , various substances seemingly adapted to ...
FIGHTING THE RUINOUS IRON - RUST By dissolving these two substances together in water , and. VARIOUS STEEL OBJECTS IMMERSED IN FERROXYL JELLY . SCREW , CUT NAIL , AND WIRE NAIL IMMERSED IN. view , various substances seemingly adapted to ...
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Contents
TABLE | 13 |
A HANDBOOK WORTH | 17 |
First Balloon Flight Across Central Alps | 18 |
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acres American boat building built called carried cent Chicago close complete connected construction cost course covered electric engine entirely experiments fact farm feet fire five four give ground half hand heat hold hour hundred inches increase interesting iron kind lake land less light live look machine manufacture material matter means ment method miles minute motor moved natural officers operation ordinary pass plant plate possible pounds practical present produced railroad railway reach recently river road sand ship shown shows side speed station steam steel street supply surface taken thing thousand tion trains trees turn twenty United weight wheels wire wireless York