rientifir DEVICE FOR HOLDING AND GUIDING THE FINGERS IN WRITING. DEVICE FOR HOLDING AND GUIDING THE FINGERS IN WRITING. An Antidote for Hydrophobia. Manufacture of Pearl Buttons. PHOTOGRAPHING A FLASH OF LIGHTNING. CUT-OFF VALVE GEAR. Toront Canada 1834-1884. lacCARTER'S CUT-OFF VALVE GEAR., scientific american, 1884-06-07

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