32 D II \-i tkki: 



These rocks have a strike parallel, approximately, to the length of 

 the lakes, the dip being to the Bouth, and changing to eastward ai the 

 southern end of the lake, with an angle var to 10 The 



lower beds resting unconformably on the gneiss, at the \ 



i. arc made up of a dark bluish-grey limestone, holding 

 concretionary masses of dark blue chert, with thin bands of black 

 argillaceous -hale Above this are thin beds of light blue fine-grained 

 dolomitic limestone, weathering yellow, interbedded with thin layers 



. gritty limestone, containing large quanl 

 sand. Next, a ten-feel bed of massive light blue, pure lime6tom 

 com pad and hard. This rock is traversed by deep vertical 

 probably due to the action of fn arc thinner 



ones of the same character, intermingled with beds of coarse, grey, 

 silicious limestone, full <>!' grit. 



The t"|> layer i- a limestone conglomerate, made up of liii 

 pebbles embedded in a sandy matrix. 



The thickness of the whole series does no1 exceed one bundn 



Although closely examined, none of the above beds gave any evi- 

 dence "i' fossil remains, the supposed fossils found by Mr. Rich 

 having, on closer examination, provod t<> be only mineral concretions. 



Si PERFICIAL DEP08IT8. 



• •win- tu tl H - absence of any considerable elevation-, near I 

 coast, an. I tu the -hallow valley- cut by the rivers, hut little information 

 was obtained relating t<» the drifl deposits. 



Where good rock exposures occurred, they were generally formed 

 by having the usual covering of vegetable matter burnt away ; and 

 'he heal occasioned by this, along with Bubsequenl rain-, has been 

 sufficient to obliterate any traces of glacial striatum. Thus the direc- 

 tion of the drift can only he arrived at L\ a study ol the travelled 



boulders, [n the vicinity of Lake Mistassini, 'ounded boulders oi 



limestone were met with in direction- to the east and north-west of 

 the lake, ami the probability i- that the drifl there wa- from north- 

 easl to Bouth west, On the Peribonka Rivor, boulders of green chloritic 

 ami epidotic rocks were -ecu. Those arc Bupposed not to have come 

 iron i the rocks oi' Lake Waki niche, hut from a similar patch of Huron- 



ian lock-, which, I am told, occur- near the head water- of the Outanl 



ami Maniquagan Rivers, to the north-easl of the place where the 

 boulders were 

 No exposures of boulder clay were seen, although the Burface of the 



whole country i- thickly covered with roundel, travelled houldci>. 

 both great and -mall. Bhowing the action o|' ice. 



