Scientific American. AUGUST 13, 1892.] 99 Magazine Guns, to be driven at a high velocity, so that at missed cigars, which were taken from his … 100 feet. disk, the electro-magnet being connected These wheels are at present operating Fig. 1.-THE PHOTO-DETECTIVE. with a detent which engages an arm on the three Edison dynamos of 80 kilowatts each, vertical spindie. above the disk is supported a flash light. The above revolve, the power for…
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