r than pay the required patentright, had them removed, and replaced by the common wheels. This circumstance is not mentioned invidiously, but as a matter ofhistory. It is not supposed that the change of wheels had the slightestconnection with the loss of the ship. * A patent was subsequently… … STEAM NAVIGATION. 409 The specification and other particulars in connection with this pa-tent may be found in several scientific journals.* Many modificationsof the paddle-wheel have been patented, and experimentally tested;but it may be said that the three last described inventions only arenow…
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