n be placed in positions where it the light can always be predetermined, and there is no danger whatever of the light’s being extinguished would be absolutely impossible to read or use a mer- cury thermometer. At the same time a series of either by wind or spray. The gas is stored in the… … ratus for ringing the bell the illustration the appa- by means of the flow of ratus is shown connected gas consists of a _ vessel to the Callendar and Grif- eS fiths thermometers, which covered by a flexible dia- phragm. The pressure of have a range from 0 deg. the inflowing gas causes to 1400…
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