The Franklin Journal, and American Mechanics' Magazine1869 |
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abutment acid angle apparatus appearance aqua regia armatures atmosphere beam belt boiler borax bridge caisson cast iron centre chemical chloride chords chromosphere cloud coil color condensation condensing apparatus construction corona cylinder diagram diameter eclipse effect engine experiments explosion exposure feet Franklin Institute girders gutta-percha heat indicator diagram instrument iridium leather length light limb LVIII.-THIRD SERIES.-No machine means ment Messrs metals miles minute moon motion nitric acid observed obtained Ottumwa photographs pier pile pipe plate polarization portion position pounds precipitate pressure prism produced Prof prominence protuberances pulleys pump quantity Railroad rays revolutions per minute rhodium river salt side slit soda solar Solar Prominences solution span spectra spectroscope spectrum square inch steam stroke substances sulphuric acid sun's surface telescope temperature timber tion tube valve vapor velocity vertical weight wood wrought iron