which the blank is fed out no undue strain , | this purpose smoking nitric acid is mixed in asand- ‘rhe manufacture of augers, like some other arti- | cles of common use, seems to have escaped the grasp | ‘can draw the edges. The lips are set quite true | | Stone trough, standing in cold water,… … required all the strength which is separated by de- of the workman to force cantation, and then _ bot- it into its work—and the tled. To use it for blast- modern ship auger, turn- ing, 9 hole is drilled into the rock, and 1.500 gms. ing out the chips with to 2,000 gms. of nitro- an ease and…
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