go6 REVIEWS 



Low 1 describes and maps the geology of the south coast of 

 Hudson Strait and the west and south shores of Ungava Bay. 

 Granite and gneiss of various ages occupy three-fourths of the 

 coastal area. Associated with them are gabbros, diabases and 

 other greenstones, cherts, quartzites, shales, and slates. All are 

 provisionally referred to the Archean. 2 Flat-bedded Cambrian 

 rocks rest with apparent unconformity upon the crystalline 

 complex. 



Tyrrell and Dowling 3 describe and map the east shore of Lake 

 Winnipeg. The rocks are all Archean and the great prepon- 

 derance of gneisses and granites of the Laurentian is the chief 

 feature. Small areas of Huronian greenstones and schists occur 

 in two localities, one on Lac du Bonnet and the other at the 

 mouth of Wannipegow River. 



In an account of a trip from Edmonton through Yellow Dog 

 Pass, in the Rocky Mountains, to Canoe River a tributary of the 

 Columbia River, McEvoy 4 describes and maps Shuswap rocks, 

 of Archean 5 age, occurring on Mica Mountain near the west- 

 ern end of the route. The series includes dark glittering 

 mica-schist, easily weathering, thinly foliated garnetiferous mica- 

 schist, with a high percentage of mica and garnet, hard garnet- 

 iferous mica-schist in massive beds, bands of dark fine-grained 

 micaceous rock apparently of eruptive origin, and layers of fine- 

 grained gneiss which, in some instances at least, is certainly 

 intrusive. The whole series, while differing somewhat from the 

 Shuswap series of the southern interior of British Columbia, 

 shows the main characteristics of that series and may be classed 

 as such. The age of this series as given by Dr. Dawson is 

 Archean. 



1 Geo/. Surv. of Canada, Annual Report, New Series, Vol. XI, Part L, for 1898, 

 pp. 5 L-47 L ; with geological map. 



2 Pre-Cambrian. 



3 Geo/. Surv. 0/ Canada, Annual Report, New Series, Vol. XI, for 1898, pp. 5 G-98 

 G ; with geological map. 



4 Geol. Surv. of Canada, Annual Report, New Series, Vol. XI, for 1898, pp. 5 D-44 

 D ; with sketch map. 



5 Pre-Cambrian. 



