No. IV. 



APPENDIX. 



377 



9!^-.: 



mi 



m 



visited by Sir James C. Eoss and 

 Lieutenant M'Clintock, in their first 

 sledge journey on the ice. Cape 

 Granite is the northern boundary of 

 the granite, which retains the same 

 character as far as Howe Harbour. 

 It is composed of quartz, red felspar, 

 and dark green chlorite ; and is ac- 

 companied witli gneiss of the same 

 composition. I have in my posses- 

 sion a specimen of this granite, found 

 as a pebble at Graham Moore Bay, 

 Bathurst Island, S.W., a locality 135 

 knots distant from Cape Granite, to 

 the N.W. 



9. Bellot's Straits, lat. 72° IST., sepa- 

 rate North Somerset from Boothia 

 Felix. The ' Fox ' Expedition win- 

 tered here in 1858, and had abundant 

 means of ascertaining the geological 

 structure of the neighbourhood. The 

 junction of the granitoid and Silurian 

 rocks occurs in these straits, the low 

 gi'ound to the east being horizontal 

 beds of Silurian limestone, while on 

 the west the granite hills of West 

 Somerset rise to a height of 1600 feet 

 above the narrow straits. The granite 

 here is of three varieties. 



a. Blackish grey, fine-grained, 

 gneissose granite, composed of 

 quartz, white felspar, and large 

 quantities of fine grains and flakes 

 of hornblende, passing into black 

 mica. The gneissose beds of this 

 granite dip 13° S.E. 



/3. A red granite, graphic tex- 



