ious instrument do not speed, that is to say, the number of revolutions performed after making many experiments on a small scale, attempted stop with the mere indications of speed. It also records it ; ‘within a given time, in the running of machinery. But a4 to inflate a large paper balloon with… … This instrument will prove an important addition to the hitherto employed may be resolved into mere “counters ” of opening was a wire grate, supported by wires, upon which means now in the hands of mechanical engineers, for the es- revolutions. A time-piece must be consUlted both at the be- the…
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