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Show Mr Frederic Burnett, of London, has recently patented a design lor a new bnJte on the following principle: Toward tho centre the sides of tuo j bridge, ceasiug to be traignl, aro constructed con-structed so as to form a parabola. A basin is thus made. While the vessel is passiue through one side of the bridge into the basin tho others remain closed and, similarly, when it reaches tho second side tho first w locked; and thus, while ships could pass through, traffic, need not be stopped. |