com-bined pressure shoe and chipbreaker. The frame whichholds the hood is hinged,and has a swivel or circu-lar motion, and can bethrown entirely out of theway to give the operator freeaccess to cutter-head. Thereare two adjustable yieldingpressure shoes for holdingthe stuff firmly to bed whilebeing… … The great iron bridge of the Atlantic and Pacific Rail-road over the Canon Diablo, in Arizona, has recently beencompleted. It is 500 feet long, the canon being some 250feet deep. The height of the bridge is 340 feet, or 14 feethigher than Bunker Hill Monument: The weight of thebridge amounts to…
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