r; The inventor is W. A. says. the Gazette, than during the past two days. The such acrack. The tool itself is simply a dovetail screw McDonald, of Mott Haven, N. Y. It rests on a bed, A, d,with cutting teeth made on the outside.of the screw, and can be operated from a shaft, B, by hand or other… … the “bar; a, on the bars, I, meteorological registers of catches in a screw, 6, of the : the Observatory in that city, been equaled since 1798. Its long continuance is some- the narrowest part of the cut and gradually deepens and} thing almost ‘unparelleled. To have the thermometer widens with the…
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