7 
[ 4»9 ] 
Obfervatlons on the Dipping Needle. 
Time when 
Place where. 
Dip of the North 
or South pOiUt 
1768 
Sept. 13 
In Funchal Bay, dip of N. end of needle 
0 / 
77 .. 
Oilober 23 
Crofting the line in long. 30° 18' W. ofGr;enwIch 
26 to 28 N. point 
1769 
January 10 
At fea in lat. 52° 54' S. and long. 63° 10' W. 
63 S. point 
20 
Good Succefs Bay in Straits Le Maire 
68 51 Ditto 
24 
On board the fhip at anchor in the above bay 
65 CO Ditto 
30 
At fea in lat. 60° 04' S. long. 74° 10' W. 
65 17 Ditto 
March 3 
Ditto, ditto, 36 49 S. ditto iii 54 W. 
65 52 Ditto 
13 
Ditto, ditto, 30 46 S. ditto 125 28 W. 
64 25 Ditto 
April 5 
Ditto, ditto, 18 25 S. ditto 140 5^ 
30 00 Ditto 
N. B. Each of the above Obfervations is the mean of ten, twelve, or more ; 
with the face of the inftrument turned alternately Eaft and Weft : thofe made at Tea 
are a little dubious on account of the motion of the fiiip ; but, by means of a 
fwinging table we had made to fet the compafs upon, we could, in a tolerable 
fmooth Tea, be certain of the dip to a degree, or at the moil two, by taking the 
mean of a great number of trials. 
1769 
May 30 
George’s Illand 
26 South point Face Eaft 
Weft 
40 
Eaft 
Weft 
29 
29 
30 10 
31 45 
31 00 
31 00 
30 
30 40 
30 18 
30 2 ^ 
30 21 
30 40 
31 00 
30 42 
30 45 
31 30 
31 50 
30 16 
30 16 
30 48 
31 45 
Eaft 
Weft 
Eaft 
Weft 
Eaft 
Weft 
Eaft 
Weft 
Eaft 
Weft 
Eaft 
Weft 
Eaft 
Weft 
Eaft 
Weft 
Eaft 
Mean 3 ° 43 
H h h ;; 
Obfcrrationt 
