Pleistocene of the Winnij^eg Basin. — Tyn^ell. 19 
That we stand fifth at present in the rank of coal-producing 
States, and that there is a greater future before us. That our coal 
resources are inexhaustible and will outlive our precious metal re- 
sources. 
That as regards Natural Gas we have indications of it in sev- 
eral parts of the state, but at present the only localities where it 
appears to be in commercial quantities, are on White river and 
Buzzard creek in the northwestern district of Colorado. 
That as regards Petroleum there are also indications of it in sev- 
eral parts of the state, but the onh' productive field is at present 
located near Canon City, and that the prospects of our industry 
in this commodity are quite as promising as were those of the 
earh" da^-s of Pennsjlvania and Ohio. 
PLEISTOCENE OF THE WINNIPEG BASIN. 
By J. B. Tyrrell, M. A., Ottawa, of the Canadian Geological Survey. * 
During the past two summers the writer has been engaged in 
examining the shores of lakes Winnipeg, Winnipegosis and Mani- 
toba, and at the present time when so much intei'est is being taken 
in the occurrence of former glacial lakes, a few notes on the 
Pleistocene beds of the Winnipeg l)asin ma}' not lie entirely out of 
place, in advance of a more detailed report to the Canadian Geolog- 
ical Survey. 
The basin of lake Winnipeg itself lies along the western face of 
the Archaean continental nucleus, the eastern shore being com- 
posed of gneiss, granite, altered quartz-porphyry, micaceous and 
hornblende schist, cericite schist, &c. , while the salient points of 
its ^western shore are chiefly composed of limestone, ranging from 
the age of the Trenton to that of the Hudson River or Niagara. 
Beneath the Trenton limestone is a thickness of one hundred or 
more feet of soft and almost incoherent Chazy sandstone, and it is 
from the area formerly covered hy this sandstone that a con- 
siderable portion of the bed of the lake would appear to have been 
excavated. Between the salient limestone points, the west shore 
is chiefly formed of drift deposits. 
Lake Winnipegosis has a somewhat similar character, the more 
northern portion of its east shore being composed of low lying 
Silurian dolomite dipping slightlj' towards the lake, while the west 
shore is composed of drift or occasional cliflfs of Devonian lime- 
stone. 
•(Published with the permission of the Director.) 
