me the chisel, G, follows, cuttingdownward in consequence of the action of the screwshank, A, in the hollow nut, D. In this manner arectangular mortise 1b formed at one continuous oper-ation by turning the handle of the tool. This is aconvenient and portable mortise auger, which can bereadily… … Hew Blue Color. The following is from the Paris correspondent ofthe Photographic News, London :— The production of new coloring materials is certainlyone of the most remarkable events in the chemical sci-ence of the present day; and in this particular coal/taVhas played the most prominent and…
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