cities, towns and villages through which canals on the roadway to enable a person to reach the center pass, the pridges in general are few in number and The figures will be more readily understood by bear- and friction rollers under the bridge to lubricate are ugly elevated structures, and all the… … itself ; that it has been se- water. Hare timbers to verely tested by the passage of heavily loaded wag- raise the cross timbers, E, to the proper hight; I ons, and appears as permanent and durable as the or- are cross timbers under the bridge ; J are string pie- dinary bridge. Boatmen do not…
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