AN EXCURSION TO ICART POINT. 



Paper read before the Society by Mr, G* T. Derrick, 

 April 4th, 1883. 



The members of the Guernsey Society of Natural Science 

 had their first excursion on Easter Monday, March 26th, the 

 district selected for exploration was the western side of the 

 projection which terminates in Icart Point. Here a descent was 

 effected over the rude steps on the almost perpendicular cliff to 

 the rough beach below, which is one of the largest left un- 

 covered at low water on this part of the coast. The track 

 across to the more open beach, which is almost covered with 

 boulders of considerable size, (the remains of masses fallen in 

 recent years from the cliff J, passes along a gully between the 

 mainland and some lofty masses of rock. This gully is similar 

 to hundreds which may be seen along the southern shores ; 

 they owe their presence to the existence of veins of intrusive 

 rock, appearing from the higher cliffs to be of a black colour. 

 These veins, being of a softer nature than the enclosing walls, 

 have been eroded by the action of the waves. This particular 

 vein is of a dark green colour and slaty structure and contains 

 some carbonate of lime ; its surface is in places covered with 

 small circular holes, giving it much the appearance as slag 



