. American engineer and railroad journal . to the effect of the lant 4°. This is a result which is observedthroughout the entire scries of experiments. The indicatorcardsshow, nc^crtlKdcss, a distinct dilTcrenee in ultimatep iwer for all <lilTcrent bevels. With S the knife jienetratesgradually through the bar, even after the maximum resistancehas been encountered ami ovcrc ime. With 4° the maximumresistance occurs at a later period ; but very littler work is doneafter this point has Ijcen jiasscd. Willi Hat knives the point.

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Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering