xii 



CONTENTS OF 



CHAP. XXXVII. 



THE LAURENTIAN AND HURONIAN SERIES. 



Distribution of Formations. — The Laurentides. The Laurentian 



System. — Description of Laurentian Rocks. — Lime and Soda Felspar. — 

 Titanic Iron-ore. — Crystalline Limestones. — Mineral Species in the 

 Limestones. — Intrusive Rocks. — Economic Materials. — Separation of 

 Laurentian Rocks into two Groups. — Extent of the Limestones in this 

 System. — Area of Laurentian Rocks in the Basin of Lake Winnipeg. — 

 Intrusive Rocks. — Character of the Dividing Ridge. — From Milles Lacs 

 to Rainy Lake. — From Rainy Lake to the Lake of the Woods. — From 

 the Lake of the Woods to the Winnipeg. — The Coast of Lake Winnipeg. 

 — Fundamental Gneiss of Scotland, the Equivalent of the Laurentian 

 Series in Canada. — Adoption of the name Laurentian in British Geology 

 by Sir Roderick Murchison, to represent the Oldest or Fundamental 

 Gneiss of Scotland. — The Huronian Series. — Description of Huronian 

 Rocks Page 268 



CHAP. XXXVIII. 



THE SILURIAN AND DEVONIAN SERIES. 



Rim of the Silurian Series. — Distribution of Formations. — The Chazy 

 Formation. — Fossils from the Chazy, Modiolopsis Parviuscula, Ortho- 

 ceras Simjisoni. — Bird's-eye, and Trenton Formations. — Hudson River 

 Formation. — The Devonian Series. — Salt Springs. — Salt Springs in 

 Rupert's Land. — Manufacture of Salt. — Salt Trade of the United States. 

 — Fossils from Devonian Rocks in the Winnipeg Basin . . 283 



CHAP. XXXIX. 



THE CARBONIFEROUS SERIES. JURASSIC FORMATION. 



Evidence of the Carboniferous Series. — " Productus." — Probability of the 

 Carboniferous Series being represented on the Flanks of the Riding 

 Moimtain. — Occurrence in Nebraska Territory. — In Kansas Territory. — In 

 the North-West generally. — On the West Edge of the Fossiliferous Basin. 

 — Ammonites from the McKenzie River, probably from Jurassic Rocks. 

 — Ammonites Barnstoni. — Ammonites Billingsi .... 299 



CHAP. XL. 



THE CRETACEOUS SERIES. TERTIARY FORMATIONS. 



Distribution of the Cretaceous Series in Western North America. — The 

 Nebraska Section. — V ertical Section in Nebraska and Rupert's Land. — 



