376 APPENDIX. No. IV, 



the north-east ; subsequently we found it to commence 

 in situ at Cape Granite, nearly 100 miles to the south- 

 west of Port Leopold. 



" The granite of Cape Warrender differs considerably 

 from that of North Somerset; the former being a 

 grajihic granite, composed of grey quartz and white 

 felspar, the quartz predominating ; while the latter, or 

 North Somerset granite, is composed of grey quartz, red 

 felsjDar, and green chloritic mica, the latter in large 

 flakes ; both the granite and gneiss of North Somerset 

 are remarkable for their soapy feel." * 



To the east of Cape Bunny, where the Silurian lime- 

 stone ceases, and south of which the granite commences, 

 is a remarkable valley called Transition Valley, fi-om 

 the junction of sandstone and limestone that takes place 

 there. The sandstone is red, and of the same general 

 character as that which rests upon the granitoid rocks 

 at Cape Warrender and at Wolstenholme Sound. 

 Owing to the mode of travelling, by sledge on the ice, 

 round the coast, no information was obtained of the 

 geology of the interior of the country, but it appears 

 highly probable that the granite of North Somerset, as 

 well as that of the other localities mentioned, is over- 

 laid by a group of sandstones and conglomerates, on 

 which the Upper Silurian limestones rej)ose directly. 

 A low sandy beach marks the termination of the vaUey 

 northwards, and on this beach were found numerous 

 pebbles, washed from the hills of the interior, composed 

 of quartzose sandstone, carnelian, and Silurian lime- 

 stone. The accompanying sketch was made by Captain 

 M'Clintock, on the spot, in 1849, and afterwards finished 

 by Lieutenant Browne. It represents the island called 

 Cape Bunny, which forms the eastern headland of the 

 entrance of the now famous Peel Sound, down which the 

 ' Erebus ' and ' Terror ' sailed, three years before it was 



* Journal of the Royal Dublin Society, 1857. 



