‘>oo 
;>Z a 
CAPTAIN INGLEFIELD. 
the diameter of the channel is reduced to thirty-seven 
miles. 
The difference between our projection of this coast 
and Captain Inglefield’s, refers itself naturally to the 
CAPE ISABELLA. 
differing circumstances under which the two were 
framed. The sluggishness of the compass, and the 
eccentricities of refraction in the Arctic seas, are well 
iitted to embarrass and mislead a navigator. I might 
hesitate to assert the greater certainty for our results, 
had not the position of our observatory at Fern Rock, 
to which our survey is referred, been determined by a 
careful series of astronomical observations/ 64 ) 
Captain Inglefield gives (he mean trend of the east 
coast about 20° too much to the north; in consequence 
