FAI'EDITION TO POINT BAKTWW, ALASKA. 



523 



Hourly readings of the Broolte balance magnetometer, Uglaamie, A laaka, May, 1883. 



One division ol' s. uli, up to May 3. 23', .0003031; between May 4 ami 21, .0001926; and after May 21, 3', .0001948 Average for month. .0002031 

 part of the vertical force. Month'ly means; Temperature, 32. 8; magnetometer, 517 2 



