262 THE CANADIAN NATURALIST. [Vol. viii. 



NOTES ON SOME GEOLOGICAL FEATURES OF THE 

 NORTH EASTERN COAST OF LABRADOR. 



By Henry Youle Hind, M.A. 



(Continued from page 240.) 



I. Symmetrical structure of the Strata. — II. Concretionary structure. — 



III. Boulders and outliers of the Upper Laurentian or Labrador Series.— 



IV. Permanent Snow Drifts.— V. Influence of Winds on the composition of 

 the Drifts.— VI. Mechanical effects produced by Snow Drifts.— VII. Amount 

 of Snow fall in North Eastern America.— VIII. Direction and Force of the 

 Winds.— IX. Influence of Snow Drifts as Geological Agents. 



1. — Symmetrical Structure of the Strata. 



It has been already stated that in general the structure of the 

 North Eastern Coast of the Labrador is very symmetrical, and 

 that the strata are often seen to be arranged in grand curves, 

 which in some instances maintain a uniform outline for miles. 



The strike of the rocks in Hamilton Inlet is about S. 75 W. 

 and this course would carry the limestones already described to 

 an exposure of the same rock noticed many years ago by Mr. 

 W. H. A. Davies,* on the Grand or Hamilton River (which is 

 the same as the Ashwanipi), some distance below Keith Lake, 

 ■end 130 miles from the mouth of the river. Here, according to 

 Davis, " primary marble of a beautiful whiteness, was seen 

 cropping out at the edge of the water ; it was found in contact 

 with a quartz rock passing into mica slate, having crystals of 

 common garnet embedded in it." 



In sailing towards Rigoulette, and on approaching the islands 

 ealled " The Sisters," the uniform foldings are specially remark- 



* Trans. Lit. and His. Soc. of Quebec, 1842. 



