. Building and repairing railways . VsKSKilNNH^^ Fig. 19. ENGINEERS into 10, 20, SO, 40, 50 and 60 parts to the Fig. 20. PROTRACTOR. tions where stakes are driven, the elevation be-tween the stakes where the slope of the ground 64 BUILDING AND REPAIRING RAILWAYS. changes and the correct location of this point; theelevation of the water in streams; the elevation of

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Keywords: ., bookcentury1900, bookdecade1900, booksubjectrailroa, bookyear1901