THE SECOND VOLUME. 



xi 



Basin of Lake Winnipeg. — The Great American Desert. — The Fertile 

 • Belt in the Basin of Lake Winnipeg. — Its Importance. — Its Natural 

 Resources. — Conclusion . . , . . Page 222 



GEOLOGY OF THE BASIN OF LAKE WINNIPEG, 

 chap, xxxvi. 



SURFACE GEOLOGY. 



Geographical Boundaries. — The Basin of Lake Winnipeg. — Limits. — 



Elevation of its Boundaries. — Outlet. — Area. — Character of its Rim. 



Surface Features. — Area of Low Lake Region. — Terraces of Pembina 

 Mountain. — Escarpment of the Riding, Duck, &c. &c. Mountains. — Prairie 

 Plateau of Rupert's Land. — Plains of the North-West. — Table of Ele- 

 vations. — Detached Hills. — Country east of Lake Winnipeg. — Lakes. — 



Direction of elevating Forces. — Steps to the Height of Land. 



Grooved, Scratched, and Polished Rocks. — On Baril Portage. — On 



Winnepeg River. — On Limestones of Lake Manitobah. Drift. — Over 



the Country between Lake Superior and Winnipeg. — Lacustrine Deposits. 

 — Drift on the Souris. — On the South Branch. — Forced Arrangement of. 

 — In Blue Clay at Toronto. — Description of this Arrangement. — Sorting 

 of Materials. — Agency of Water and Ice. — Glacial Ice. — Tiers of Boulders 

 on the South Branch. — Layers of Stratified Mud. Erratics. — Distri- 

 bution of. — Effects of Ice on Lake Winnipeg. — In Lake Manitobah. — On 



the Red River Prairies. Beaches and Terraces. — Great Dog 



Portage. — Section of. — Beaches on Lake Superior. — On Prairie Portage. 

 — The Big Ridge. — White Mud River Ridge. — Dauphin Lake Ridge. — 

 Prairie Ridges. — Pembina Mountain. — Ridge, Character of. — Riding and 

 Duck Mountain Ridges. — Conical Hills. — Bear Hill. — Second Tier of 

 Conical Hills. Sand Hills and Denes. — Ranges. Circular De- 

 pressions. — Character of. Denudation. — In the Basin of Lake Win- 

 nipeg. — Parallelism of bold Limits of Denudation. — Grand Coteau de 

 Missouri. — Niagara Limestone Escarpment of New York and Canada. — 

 Riding and Duck Mountains, &c. — Probable common Origin of. — Dislo- 

 cations in the Basin of Lake Winnipeg 239 



