GEOLOGY 201 



small outlier at Silliman's Fossil Mount near the head of Fro- 

 bisher bay. This locality was visited in 1897 by a party from 

 the Peary Arctic expedition of that year. In the course of a 

 few hours they obtained fifty-four species of fossils from this 

 locality, which were later named by C. Schuchert. 



Dr. Franz Boas describes the nucleus of the mountain masses 

 of Baffin island to be everywhere gneiss and granite, with Silu- 

 rian limestones about the region of the large lakes of the interior 

 and along the low lands of the west coast. 



Dr. R. Bell visited the north shores of Hudson strait in 1884 

 and 1885, and again in 1897, when he made a close examina- 

 tion of the coast from the neighbourhood of Big island to 

 Chorkbak inlet near Gordon bay. Dr. Bell describes the prevail- 

 ing rocks of the southern shore of Baffin island as consisting 

 of well stratified hornblende and mica-gneiss, mostly gray in 

 colour, but sometimes reddish, interstratified with great bands 

 of crystalline limestones, parallel to one another and conform- 

 able to the strike of the gneiss, which in a general way may be 

 said to be parallel to the coast in the above distance. The direc- 

 tion, however, varies somewhat in different sections of the coast. 



' The distinguishing feature in the geology of the southern 

 part of Baffin land is the great abundance, thickness and regu- 

 larity of the limestones associated with the gneisses. At least 

 ten immense beds, as shown on the accompanying map, were 

 recognized, and it is probable that the two others, discovered in 

 North bay, are distinct from any of these. There would, there- 

 fore, appear to be twelve principal bands as far as known, to 

 say nothing of numerous minor ones, between Icy cape and 

 Chorkbak inlet. The limestones are for the most part nearly 

 white, coarsely crystalline, and mixed with whitish feldspar. 

 The limestones usually contain scattered grains of 

 graphite, and among the other minerals which commonly occur 

 in the various bands are mica, garnet, magnetite, pyrite and 

 hornblende.' 



