ON THE PEE SENT VAEIATION OE THE COMPASS. 
Annual change of Westerly Declination (continued). 
Dungeness 
Portsmouth 
South Coast of England, 
from Dungenessto Scilly, 
including Channel Is-< Guernse y- 
lands, between 51st and 
49th parallels. 
Plymouth 
l 
Scilly Islands 
Irish Channel, between 
52nd and 54th parallels. 
Milford 
Wexford 
Dublin 
Holyhead. 
Calf of Man 
Oantyre (Mull) 
Martin Head .. 
Sligo 
Ireland, S.W., West, and r , 
N.W. Coasts: 52nd to^ 4jalwa y 
55th parallel. 
Valentia 
l 
Cork 
Hebrides and West Coast 
of Scotland: 56th to</ 
58th parallel. 
W est Coast of Islay 
Kyle Akin 
West Coast, Outer 1 
Hebrides / 
Diff. 
1842-5 22-751 ° 
1872-0 19-00 J ' 
1842-5 23-70 } a 
1872-0 20-05 J 
1842-5 24-00 ] ~ 
1872-0 20-40 / * 5 ' 00 
1842-5 24-95 1 
1872-0 21-40 J 6 00 
1842-5 25-80 1 
1872-0 22-30 J 
1842-5 25-751 
1872-0 22-25/ u 
1842-5 26-651 
1872-0 23-25/ 
1842-5 27-00/ 
1872-0 23-55 / 
1842-5 26-20} 
1872-0 22-65 
1842-5 26-55/ 
1872-0 23-00 J^ 6 
1842-5 27-50 / 
1872-0 24-00/ 
1842-5 28-30 / 
1872-0 25-05 
1842-5 28-35/ 
1872-0 25-30 J 
1842-5 28-25 / „„„ 
1872-0 25-25 / U 
1842-5 28-30/ 
1872-0 25-35 /~' y 
1842-5 27-50 } 
1872-0 24-35 ] J0 
1842-5 28-00 / „ . „ 
1872-0 24-60 j **' 4U 
1842-5 28-25/ 
1872-0 24-75 j' 3 ' 50 
1842-5 29-40 / 
1872-0 26-20/ 15 ~ U 
> 7-10 
Annual Mean 
decrease, value. 
- 7-63 ^ 
= 7-43 
= 7-33 > 7-34 
= 7-22 
= 7”12 
- 7-12 h 
= 6-91 
= 7-02 
= 7-22 
: - 7-22 
= 7-12 
= 6-61 
= 6-20 
= 6-10 y 6-26 
- 6-00 
= 6-40 j 
= 6-91 
= 7-12 > 6-85 
= 6-51 
