62 



MAGNETIC INTENSITY, FERN ROCK OBSERVATORY. 



Abstract of Observations of Vibrations at Haklutt Island. 

 Approx. lat. 77° 23'. Approx. long. 72° 30' W. of Gr. 

 1855. June 21. 33°.3 7^020 ) 



" 21. 33.3 7.026 \ 7^026 33°.5 



" 21. 33.8 7.033 ) 



Abstract op Observations of Vibrations at a station in lat. 76° 03' and long. 68° 00' W. op 

 Gr., on the coast between Parker Snow's Point and Cape York. 



1855. July 19. 40°.0 6^475l 



'^ 19. 41.5 6.489 | 



" 19. 41.2 6.544 



G^495 



40°.5 



19. 



39.5 



6.474 



Peteumination of the Moment of Inertia of Magnet A. 67. 



(With stirrup and mirror attached.) 



No determination of the moment of inertia of magnet A. 67 having been made 



by the expedition, it became necessary to determine the same afterwards. The 



following observations for this purpose were made by myself at the Coast Survey 



Office, Washington, D. C. 



