[ 136 ] 
EXPERIMENTS ON THE DIPPING NEEDLE. 
At Moofe Fort in Hudfon’s Bay, September 8, 1774, lat. 
51° 20' North, long. 82° 30' Weft from London, 
variation 17° Weft. 
> The index placed Weft. 
j 
' 
y The Index placed Eaft. 
' 
> The poles reverfed, index Eaft, 
'1 
y The index placed Weft. 
The obfervations were made on fliore. So remarka- 
ble difference between them, when I was expedting quite 
the reverfe, furprized me as much as the increafed in- 
clination of the needle from obfervations made nearly 
in the fame parallel of latitude in London. I endea- 
voured, by drawing a magnetical meridional line with 
chalk, and paying the greateft attention to keeping the 
inftrument perfe 611 y fteady and horizontal, to render 
thefe experiments accurate, and fulfil the intention of 
the Royal Society. E x p e-^ 
80® 25' 
80 15 
80 35 
79 ° 
80 30 
81 25 
80 13 
81 13 
79 10 
80 45 
79 5 ° 
79 10 
79 10 
80 25 
79 45 
80 5 
