Show chronometer PUT TO TEST it Is I 1 kept on ice to secure accuro adjustment each year yc the time ot of the united states navy are sub jested to a test to determine their ao so and to correct any irregular ties this operation commences in J january a n u ry an and d usually a 1 ly 1 lasts t s ta u until n t il t the abo t m middle i d d 1 ot J june une a and t d du during r i n g t thit h a t ti tier these delicate timepieces are kept oa on ico at the united stales states naval observe aliory it Is not for any fear that they will spoil that they are subjected to this frigid experience but it in I 1 rece esary tor for the purpose of accurate adjustment that they should all be b maintained in a constant temperature the necessity of having a ship a clocks all absolutely alike will be real led 1 cd by the layman when be he Is reminded that an error ot of tour four seconds in the chronometer means an error rt r a mile in calculating the vessel a lo 10 tion the temperature varies at dit dif ferent times of the test from 50 to 80 90 degrees and the losing or gaining qualities ot of the chronometer chronometers under tress conditions are accurately kept thus with a chart expressing in curves just what he may expect from tie he chronometer under different conditions of climate and with his thermometer and barometer close at hand a sailing master may calculate to a nicety the correct time and get nil his location to a certainty |