8 
THE REV. STEPHEN J. PERRY ON THE MAGNETIC 
Table I. 
Station. 
Latitude. 
Lon 
gitude. 
Difference 
Latitude. 
in miles oi 
Longitut 
Paris Observatory 
O 
48 
50 
// 
11 
m 
0 
s 
0 
- 0-2 
Vaugirard 
48 
50 
25 
— 
0 
10 4 
— 2* 
Rheims 
49 
15 
15 
+ 
6 
47 
+ 29 
+ 77 
Metz 
49 
7 
14 
+i 
5 
22 
+ 20 
+ 174 
Strasburg 
48 
34 
57 
+21 
40 
- 18 
+248 
Issenheim 
48 
0 
32 
+ 19 
49 
- 57 
+228 
Mont Rolland 
47 
8 
30 
+ 1 
2 
34 
-117 
+ 148 
Dole ?. 
47 
5 
33 
+ 1 
2 
38 
-120 
+ 149 
Dijon 
47 
19 
19 
+ 10 
48 
-105 
+ 127 
Lyons 
45 
45 
45 
+ 
9 
57 
-212 
+ 120 
Avignon 
43 
57 
13 
4" 
9 
53 
-337 
+ 123 
Marseilles 
43 
17 
55 
+ 1 
2 
10 
-382 
+ 153 
Monaco 
43 
43 
2 
+20 
21 
-352 
+255 
Montpellier 
43 
36 
44 
+ 
6 
10 
-361 
+ 77 
Grenoble 
45 
11 
12 
+ 1 
i) 
34 
-252 
+ 166 
N. D. de Myans 
45 
30 
50 
+ 14 
36 
-230 
+ 177 
Mongre 
45 
59 
25 
+ 
9 
29 
-197 
+ 1 14 
St. Etienne 
45 
26 
9 
+ 
8 
13 
-235 
+ 100 
Clermont Ferrand 
45 
46 
46 
+ 
3 
0 
-211 
+ 36 
Iseure (Moulins) 
46 
33 
59 
+ 
4 
4 
-157 
+ 48 
Douay 
50 
22 
15 
+ 
2 
59 
+ 106 
+ 33 
Boulogne 
50 
43 
33 
2 
54 
+ 131 
- 32 
Place of observation. 
G-arden of College. 
Place Ruinart. 
Coll. S. Clement. 
9 Rue des Juifs. 
Garden of College. 
Chateau. 
4 Rue du College. 
Garden of the Hospital. 
8 Terrasse de Fourvieres. 
62 Rue des Lices. 
Missions de France. 
Garden near Palace. 
13 Rue Rondelet. 
On hill-side facing town. 
Promenade. 
Garden of College. 
College S. Michel. 
College. 
Petit Seminaire. 
English College. 
41 Rue Brecquerecque. 
The Magnetic Tip. 
The Dip observations were made with three different needles at each station with the 
following results : — 
Table II. 
Station. 
Date. 
G. M. T. 
Number of 
readings. 
Dip. 
Mean. 
1. 
2. 
3. 
No. 1. 
No. 2. 
No. 3. 
1869. 
h m 
O / // 
O / // 
„ 
Aug. 6 
10 52 a.m. 
36 
34 
65 52 12 
65 49 2 
11 47 A.M. 
7 
8 28 a.m. 
32 
65 46 50 
65 49 2l 
Rheims 
„ 10 
8 50 a.m. 
32 
65 57 43 
10 8 A.M. 
34 
65 56 34 
11 10 A.M. 
38 
65 48 15 
65 54 11 
Metz 
„ 12 
9 28 A.M. 
32 
65 31 37 
2 5 p.m. 
36 
65 20 24 
3 44 p.m. 
32 
65 24 29 
65 25 30 
„ 14 
4 35 p.m. 
38 
64 39 33 
„ 15 
2 58 p.m. 
36 
64 43 32 
5 40 p.m. 
36 
64 34 25 
64 39 10 
Issenheim 
„ 17 
9 50 a.m. 
36 
64 38 39 
1 1 0 A.M. 
34 
64 28 23 
2 37 p.m. 
32 
64 35 4 
64 34 2 
Mont Holland 
„ 19 
4 14 p.m. 
36 
64 13 29 
64 13 29 
Dole 
.. 19 
9 9 A.M. 
32 
64 15 18 
„ 20 
9 24 a.m. 
32 
64 8 11 
1 1 0 A.M. 
34 
64 8 35 
64 10 41 
Dijon 
„ 21 
10 15 A.M. 
32 
64 28 4 
2 56 p.m. 
32 
64 20 3 
4 21 p.m. 
38 
64 19 3 
64 22 23 
Lyons 
„ 23 
9 3 A.M. 
34 
63 12 33 
9 53 a.m. 
36 
63 15 1 
10 55 a.m. 
38 
63 14 17 
63 13 57 
Avignon 
„ 25 
8 30 a.m. 
36 
61 44 32 
9 30 a.m. 
38 
61 37 12 
1 1 20 a.m. 
32 
62 3 17 
61 48 20 
