506 



KXI'KIMTION TO POINT HAlMv'OW, ALASKA. 



Ilonrly ri'inlhif/.s of tlic /.'/<)/,< Infilnr magnet 



[To reduce readings approximate! J I" a tinifonn .srii.'s .-.iililr.n'I In7.0 divisions from :ill muling aft Au^n^! 7,2:1 hour.!, t!. 



On.- division of si-;i:,- .00007GO 



