reat stress of weather at almost all seasons of the ture recorder, the “Whipple,” of which we publish an illustration herewith. This temperature indicator is year. The steel hull, which is built of extra strength, intended to be utilized with the Callendar platinum is fitted with fin and web keels,… … the bulb of the thermometer, is protected from the action the supply men, who make of fumes and mechanical dam- periodical visits to the un- age by means of a glass, steel, manned lightship. or porcelain tube, depending The experiments’ already ranging from three months to a year, according to the…
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