C ] 
FOR THE VARIATION OF THE MAGNETIC NEEDLE- 
OBSERVATIONS. 
Morning. 
Noon. 
2 P. M., 
Evening, 
Augufl 
September 
21 
22 
23 
24 
25 
26 
27 
28 
29 
30 
31 
1 
2 
3 
5. 
21 27 
21 20 
21 28 
20 
41. 
22 
21 
20 ' 
IS 
34 
23 
27. 
22 
41 
21 
The mean .of all, 
Error of inftruinent, 
Gorre^ variation,,' 
21 38 
33 
35 
32 
35 
32 
33 
34. 
34 
35 
36 
16 
21 37 
21 24 
33 
35 ' 
32 
29 
10 
15 
IS 
34 . 
34 , 
32 
33 
34 
21 IS, 
21 18 
18 
19 
20 
20. 
20 
02 
14- 
12 
12 
19 
18 
29 
^ ... .. . — Jib 
406 
393 
397 
236 
21 25 
21 33 
21 28 
21 17 
21 
10- 
21 16W, 
How the error of the inftfument was found, will be 
fliewn in the next publication. 
THE END OF VOL. LXV» PART I* 
