
mein } ENTS. 
CHAPTER I. 
PHYSICAL GEOGRAPHY AND GENERAL GEOLOGY. 
GeyeraL PuysicaL Grocrapuy.—Interior region of the Continent—Eastern boun- 
dary—Western boundary—Slope of the region—First prairie level—Second 
prairie level—Third prairie level—Transverse watersheds—Description of the 
southern transverse watershed—The northern transverse watershed—Areas 
drained by different river systems—Area of the plains. GENERAL OUTLINE 
OF THE GroLogy.—General nature of the region—Silurian series—Devonian 
series—Possible existence of Carboniferous rocks—Permian and Triassic— 
Jurassic—Cretaceous formation—Lignite Tertiary formation—Authorities on 
tne, Geology of the region - - - - - - - == 2+ ==. = «‘*pl 
CHAPTER Ll. 
GEOLOGY OF THE LAKE OF THE WOODS. LAURENTIAN AND 
HURONIAN. 
Position AND GroGrRapHy oF THE Laxe—Clear-water Lake—Sand-hill Lake—White- 
fish Lake—Lac Plat—Former GroLocicaL ExpLorersS—LAURENTIAN FORMATION 
—Vicinity of the North-West Angle—Flag Island to Rainy River—Bigsby 
Island—Middle Island—North Island—Shebashca—ARrEA OF MUCH-ALTERED 
Hvrontan.—Intrusive Granitic Mass or Nortu-West Anoie—Its form— 
Northern branch—Southern branch—Included area of altered rocks— 
Huronian Rocks—AnGteE Inter To Ka-KA-KE-waBEC—Quartzite—Conglomerate 
belt—Schistose rocks—Second Conglomerate belt—Second Schistose belt— 
Ka-KA-KE-WABEC GRANITE—Hvrontan Rocks Ka-Ka-KE-wWaBEC TO Rat PortTaGe 
—Schistose belt—Conglomerate of Lacrosse Island—Extensive Schistose 
belt with some conglomerates—JuncTION OF THE LAURENTIAN AND HURONIAN 
at Rat PortaceE—GeENERAL DisrrisuTion AND ATTITUDES OF THE Rocks—Main 
directions of flexure—Comparison with other localities—CHARACTER AND 
AGE OF THE S0-CALLED Huronian Rocxs—Nature of the Conglomerates—Meta- 
morphism—Dykes and veins—MINERALS OF ECONOMIC VALUE - - = Pp. 22 
CHAPTER III. 
STRUCTURE OF THE ROCKY MOUNTAINS IN THE VICINITY OF 
THE FORTY-NINTH PARALLEL. 
GeyeraL Feratvures.—lIntersection of the Mountains and Forty-ninth Parallel— 
General Geological Structure—Rocxs tn THe vicinity oF Waterton Lake 
—Series A.—Series B.—Series C.—Rocxs in THe Koorante Pass—Subdivi- 
sions of Series C.—East Fork—Rocks west of East Fork—The Water- 
shed—West Fork—Rocks exposed in Mt. Yarrell—Rocxs near tHe Bovun- 

