[ 133 ] 
EXPERIMENTS ON THE DIPPING NEEDLE. 
In Hudfon’s Straits, July 27, 1774, lat. 62° 23" North, 
long. 71° 30' Weft from London, variation 42° 50' 
W efterly per azimuth . 
O / 
81 
45 ' 
83 
1 2 
. The 
index placed Eaft. 
82 
1 2 
83 
0 ■ 
8a 
45 
, The 
index placed Weft^. 
83 
45 , 
83 
30 ' 
84 
0 
. The 
poles changed, and itidex Weft. 
83 
35 
8S 
0 1 
83 
^5 
^ The 
index placed Eaft. 
83 
45 J 
I met with the fame impediment as in the laft triahof 
the inftrument, the field of ice turning round, fo as to 
remove the needle cohftahtly out of the magnetic meri- 
dian; however, I endeavoured to be exadt, and re-adjuft- 
ed the pofition of the inftrument twice during the ob- 
fervations. 
T z 
EXPE* 
