516 Geological Society : — 



another, " Kefutation of Darwinism " ; a third, " Science and 

 Religious Dogma." In this latter, the Doctrine of the Trinity is 

 by the author found to be analogous to the three modes in which 

 (according to him) energy is capable of manifesting itself. We 

 may add in conclusion that the publishers of the book have very 

 obligingly inserted into it a slip containing the sort of review of 

 the book which they wish to appear ; this, however, we have 

 found it necessary to modify somewhat. 



LVIII. Proceedings of Learned Societies. 



GEOLOGICAL SOCIETY. 



[Continued from p. 424.] 



April 16th, 1902.— Prof. Charles Lapworth, LL.D., F.P.S., 

 President, in the Chair. 



THE following communications were read : — 

 1. ' The Carlisle Earthquakes of July 9th & 11th, 1901.' Bv 

 Charles Davison, Sc.D., F.G.S. 



The shocks were at least four in number, and there are single 

 records of four other shocks. The isoseismal 5 of the first and 

 principal shock is very nearly a circle 29 miles in diameter, with its 

 centre 7 miles south-south-west of Carlisle, and is excentric with 

 regard to the isoseismal 4. The continuity of the shock over a 

 band extending from Carlisle to Coni&ton implies a corresponding 

 continuity in the focus. The investigation of the earthquakes has 

 led to the recognition of a deep-seated fault, the average direction 

 of which is N. 5° E. and S. 5° W. and the hade throughout 

 is to the east. In the surface-rocks there is no sign whatever 

 of such a structure. The movements along the fault were somewhat 

 peculiar. In the first shock the focus w T as of considerable length, 

 and consisted of two principal portions, the centres of which were 

 about 23 miles apart, connected by a region wherein the slipping 

 w-as continuous throughout, and much less in amount. The 

 northern part of the focus was smaller than the other, but was 

 marked by a much stronger impulse. The third slip was com- 

 plementary to the first, for it appears to have occupied the whole 

 of the region between the two principal portions of the first focus, 

 and to have been greatest near the centre of that region and 

 to have gradually diminished towards both ends. 



2. ' The Inverness Earthquake of September 18th, 1901, and its 

 Accessory Shocks.' By Charles Davison, Sc.D., E.G.S. 



Since the Comrie earthquake of 1839, which was followed by 

 330 tremors and earth- sounds within little more than two years, 

 no British earthquake has been attended by so many accessory 

 shocks as this one. The unusual intensity of the earthquake, its 

 apparent connexion with the great northern boundary-fault of the 

 Highlands, and the possibility of tracing oscillations in successive 

 centres of disturbance along the fault-surface, combined in rendering 



