PRESENT VARIATION OF THE COMPASS. 
Declination Ditf. 
West. 
[^Shetland Islands f Welsh 1858-0 25 1 7*5 1 .. 
(Lerwick) ... (Calver 1 869*7 22 47‘0j 
Mean 
Annual value of 
change, annual 
, change. 
Shetland Islands and N.E. 
0-5 = 
Thurso Otter 1857'0 
26 01-0 
Coast of Scotland 
Culver 1 866-6 24 45-0 
Thurso (continned)'Wehh 1858-0 26 30\3l 1f r 
Culver 1866-6 24 45-0 J 
1 2*86 "'j 
0 = 7-go 
3=12-24 
■ 11-21 
Wick Welsh 1858-0 
Calver 1866-6 
East Coast of England Bridlington Ross 1857‘0 
Calver 1867-3 
26 0.3-7 
24 22*0 
22 4.3-6 
20 57-0 
South Coast of England Plymouth Cox 1 857*0 23 29*7 
Mayes 
1867-25 
09-0 
Ireland, S.W. Coast 
Berehaven 
.Church ... 1857-0 26 42-5 
Moriarty ... 1866-5 26 08-0 
101-7=11-83 ) 
106-6 = 
80-7 = 
34-5= 3-63^1 
10-35 
7-87 
Valentia Edye 1857*0 
f_ Kerr 1870-25 
Scotland, West and NAV. , 
Coasts* ' 
7 39*01 g. c 
5 32-5/ 
9-54 J 
58 
Oban (Dunolly 
Hill) ' 
f Bedford . 
(Otter 
.. 1857*0 .... 
.. 1866-75 
... 27 
... 25 
00-61 
5.3-0/ 
6 7-6 = 
6*93 
Oban (Kerrera) .. 
..Bedford . 
Otter 
.. 1857-0 .... 
.. 1866-7 .... 
... 26 
... 25 
39-0 1 
02-0 / 
97*0 = 
10*00 
Kyle Akin 
..Otter 
Otter 
.. 1 S57"0 .... 
.. 1866-5 
... 27 
.. 26 
26-0/ 
0-0 J 
86-0 = 
9-05 
Loch Eribol 
.Otter 
Calver 
1857-0 .... 
,. 1866-6 .... 
.. 27 
.. 25 
11-51 
14-0 J 
1 1 rb— 
12-24 
> 9*55 
It will be here observed that the proportional amount of change in the several 
geographical districts agrees with that observed for the longer interval of 29-5 years. 
* Stornoway in the Hebrides has not been included, as the stations where the observations were made at the two 
dates are some distance apart, and much local disturbance exists in the neighbourhood. There appears, indeed, 
on the western coast of Scotland generally and on many of the outlying islands, to be great difficulty in selecting 
a position to avoid local disturbances from basaltic and other eruptive rocks. Compass Hill at Canna is a 
notable example. 
