VICE-ADMIRAL SIR C. SHADWELL ON TERRESTRIAL MAGNETISM. 
147 
to the Admiralty in MSS., and are no doubt deposited among the records of the 
Hydrographic Office. 
In so far as I am aware they have never yet been published, with the exceptions 
above named (Notes A & B). 
Postscript. — Feb. 8, 1877. 
The magnetic dip was determined at Kew by Mr. Whipple, with the instrument and 
needles employed in the preceding observations, with the following results : — 
January 1877. Mean dip. Needle No. 1 . . . 67 57’87 
„ No. 2 . . . 68 1-11 
Mean dip by Kew Standard .... 67 46‘5J 
Corrections. January 1877. Needle No. 1 . . . 11-28 
„ No. 2 . . . 14-52 
