Friction and Percussion. How to Observe the Sun. mu. is Steam Generators. The Fossil Mau of Onondaga. The Prize Offered by the Swiss Government for a Time and Percussion Fuse. Fresh-Water Wells near Salt Water., scientific american, 1869-11-13

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Friction and Percussion. How to Observe the Sun. mu. is Steam Generators. The Fossil Mau of Onondaga. The Prize Offered by the Swiss Government for a Time and Percussion Fuse. Fresh-Water Wells near Salt Water., scientific american, 1869-11-13

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