510 



i:\l-KDJT10N TO POINT JJAliliOW, ALASKA. 



Monthly mean oahut of the hourly readings of tht thermometer attached to the Hif<l<ir magnetometer and 



expressed in degrees of Fahrenheidi scale. 



TEMPEEATUEE COEFFICIENT. 



There were no .special observations made to ascertain the effect of changes of temperature on 

 the magnetic moment of the Itiiilar magnet; the instrument was mechanically compensated as near 

 as could bo judged ; we have, therefore, to determine the outstanding effect by means of the 



