858 REVIEWS 
River sheet. A newmap isissued. Dr. Adams and Mr. Barlow worked 
on the area of central eastern Ontario covered by the Haliburton sheet. 
This is a region of much importance in the determination of the rela- 
tionships of the various members of the Archean, and the results of 
Dr. Adams’ investigations when completed will throw much light on 
the problem. Already many important facts have been brought out. 
An important discovery of corundum in Hastings county is announced. 
The work of mapping the Rainy River gold-bearing region was con- 
tinued by Mr. McInnes. Dr. Ells continued the work in the area 
between the Ottawa and St. Lawrence rivers. 
The observations on glaciation in southeastern Quebec by Mr. 
Chalmers show two periods of glaciation. In the first, which appears 
to have been local and centered in the Notre-Dame mountains, the ice 
moved northward to the St. Lawrence valley. The second was the 
Laurentian. The bowlder clays of the two differ lithologically. Marine 
shore lines show changes of level amounting to 600 or 700 feet in 
Pleistocene times. Slight postglacial dislocations of the slates were 
observed in many places. Dr. Bell reports on field work in the region 
of the Upper Ottawa and Rupert rivers and Mistassini Lake. 
Mr. A. P. Low continued his exploration in northern Labrador 
between Hudson Bay and Ungava Bay. The rocks are principally 
Archean, but considerable areas of Cambrian were found. ‘The land 
was completely covered by the glacial ice-sheet. The névé region 
seems to have been near the present watershed. On the western slope 
the ice moved nearly westward veering slightly to the south. On the 
eastern slope its initial direction was eastward but its final direction 
was northward to Ungava Bay. On the western slope the eskers corres- 
pond in direction with the present drainage lines, which, however do 
not agree with the direction of ice movement. ‘The unstratified drift 
is generally in hills of irregular form and direction. The bowlders 
are generally of local origin. The highest marine terrace seen on the 
Hudson Bay side was 710 feet above sea level while the highest on 
the eastern slope was 620 feet above the sea. 
Dr. Bailey and Mr. Fairbault worked in the gold-bearing Cambrian 
region of Nova Scotia, where mining is quite active. 
The Chemical and Mineralogical Report by Dr. Hoffman contains 
the results of many analyses and assays. The report on Mineral 
Statistics and Mines is very complete. 
R. D. GEORGE. 
