SURVEY OF THE BRITISH ISLES FOR THE EPOCH JANUARY 1, 1886. 297 
Disturbing Forces in Scotland from Mr. Welsh’s Survey in 1857. 
Station. 
Latitude. 
Longitude. 
F. 
0. 
Z. 
Aberdeen. 
o < 
57 9 
2 05 
163 
-164° 
- 227 
Alford. 
57 14 
2 45 
109 
- 43 
- 72 
Ardrishaig. 
56 1 
5 27 
43 
+ 151 
- 149 
Ardrossan . 
55 39 
4 47 
, , 
+ 223 
Ayr. 
55 28 
4 38 
59 
-150 
- 147 
Balmacarra. 
57 17 
5 39 
127 
+ 152 
+ 51 
Banff. 
57 39 
2 31 
77 
+ 87 
- 148 
Braemar. 
57 1 
3 25 
184 
+ 9 
- 178 
Bridgend. 
55 48 
6 16 
+ 309 
Broadford . 
57 15 
5 51 
+ 417 
Callei’nish. 
58 10 
6 44 
99 
- 6 
- 45 
Corpach. 
56 51 
5 8 
100 
- 3 
+ 331 
Cross. 
58 29 
6 17 
90 
+ 67 
+ 283 
Balwhinnie. 
56 56 
4 17 
107 
+ 19 
— 183 
Dumfries. 
55 5 
3 36 
96 
+ 123 
- 172 
Durness.. . 
58 34 
4 44 
II2 
+ 152 
+ 190 
Edinburgh. 
55 58 
3 II 
94 
+ 131 
- 93 
Fort Augustus. 
57 9 
4 40 
80 
- 87 
+ 89 
Glenmorven. 
56 38 
5 58 
410 
+ 86 
+ 1310 
Golspie. 
57 58 
3 58 
7 
- 90 
+ 293 
Gretna. 
55 1 
3 3 
172 
-113 
- 170 
Helensburgh. 
56 2 
4 43 
149 
-139 
- 181 
L, Inver. 
58 10 
5 12 
248 
-148 
- 608 
Inverness. 
57 28 
4 II 
49 
- 39 
+ 163 
Kintore. 
57 15 
2 23 
- 312 
Kirkwall. 
58 59 
2 58 
153 
+ 45 
+ 250 
Kyle Akin. 
57 16 
5 44 
174 
+ 134 
+ 28 
Lamlash. 
55 31 
5 5 
- 1 
Larbert. 
56 2 
3 49 
- 91 
Lerwick. 
60 9 
1 8 
100 
- 6 
+ 238 
Lochgoilbead. 
56 10 
4 54 
66 
- 10 
- .363 
Makerstoun. 
55 35 
2 31 
65 
+ 37 
+ 162 
Newton Stewart. 
54 56 
4 28 
155 
-168 
- 137 
Oban. 
56 27 
5 26 
120 
- 31 
- 303 
Peterhead . 
57 31 
I 46 
71 
+ 174 
- 141 
Pitloclirie. 
56 42 
3 43 
58 
-150 
- 332 
Port Askaig. 
55 52 
6 8 
+ 214 
Stornoway. 
58 15 
6 23 
152 
+ 7 
+ 41 
Stranraer. 
54 54 
5 2 
175 
-166 
- 333 
Thurso. 
58 35 
3 32 
94 
+ 65 
+ 89 
Wick. 
58 25 
3 5 
90 
+ 172 
+ 316 
These values are shown in hg. 23. The ari'ows represent the Horizontal Forces in 
magnitude and direction. The numbers are the Vertical disturbing Forces in terms of 
O'OOOl metric unit. When negative they are underlined. Lines of no Vertical 
Force disturbance are also drawn. The shaded parts are regions of positive Vertical 
Force disturbance. A comparison of this with figs. 25 and 26 will suffice to show 
that there is a close ao-reement between the two. Thus, in the case of the Vertical 
Forces, v;e both find regions of high Vertical Force along the lines of the Caledonian 
Canal and the Western Isles, and on the East and West Coasts of South Scotland. 
mdcccxc.—A. 2 Q 
