SURVEY OP THE BRITISH ISLES FOR THE EPOCH JANUARY 1, 1886. 309 
is continued into the Welsh coal-fields. This fact is very important, and will be 
hereafter discussed when we consider the relations between the magnetic and 
geological peculiarities of this district. 
Fig. 31. 
Southern England and Wales. 
Ireland. 
In Ireland, as elsewhere, the Horizontal Forces tend towards the regions of greatest 
Vertical Force. 
At Coleraine and Waterfoot, stations to the north of the great mass of basaltic 
crystalline rocks in Antrim, the disturbing forces tend southward. At Cookstown 
Junction and Bangor, on its southern borders, they are directed to the north. 
Kells is a point of maximum Vertical Force, and the forces at neighbouring stations 
are all du-ected. towards it. 
A clearly marked ridge line runs through a region of positive Vertical Force 
disturbance in Connemara, and extends to the north beyond it. 
Another series of stations of high Vertical Force extend eastwards from Clare, and 
they apparently dominate all the region to the south of them. The direction of the 
disturbing force at Kilrush is anomalous. At Charieville there is a minimum of 
