Meetings, i887. 



logical Society, on the rocks of Sark, Herm and Jethou. In 

 illustration of points remarked upon, specimens of the rocks 

 were exhibited by Mr. Robert, and some discusssion ensued. 

 Afterwards the secretary read a short description of the Phy- 

 sical Geology of Guernsey. 



Notes.— In September two woodpeckers were shot in 

 Jersey. The winged ant has been found in unusual numbers. 

 A swallow-tailed blue Butterfly (Lampudes Bosetica) has been 

 captured. Swallows were seen October 18th. Seven Jays and 

 a white tailed Eagle were shot in Alderney. A King Eider 

 Duck and two Snow Buntings were shot in Jersey. A Fire 

 crested Eegulus and the Puffin (Alca arctica), which is very 

 scarce in winter, were shot in Guernsey this autumn. 



The following brief survey of the Geology of the island 

 written by the Rev. E. Hill, is published by permission of Mr. 

 James Gardner, Royal Hotel, for whom it was written. 



THE GEOLOGY OF GUERNSEY. 



The student of Physical Geology will find in Guernsey 

 unsurpassed opportunities for studying the activities of the 

 sea. Billows from the Atlantic ceaselessly attack its coasts ; 

 they batter every point of weakness ; they widen every breach. 

 They round the fallen fragments in boulders, they reduce 

 these to pebbles, shingle, sand. The powerful tides and 

 currents then take up the work : these carry away the detritus, 

 and clear a path for further destruction. All stages of decay 

 may be seen around ; Icart point is joined to the cliff by a neck 

 which rain and wind are cutting down ; after time long enough 

 this will have descended to the sea level. Castle Cornet and 

 Lihou are already islands save at low tides ; islets, reefs, and 

 sunken rocks in every direction are relics of masses once most 

 extensive whose destruction is now nearly complete. 



The visitor may almost everywhere examine the processes 

 of this action. Every cave, cleft, fissure, rock pillar or natura 

 arch, has had a cause, and this cause can usually be found. 



