Raymond: The Chazv Formation and its Fauna. 597 



TABLE OF CONTENTS. 



Page. 



Introduction 498 



Distribution of the Chazy Formation 496 



The Lake Champlain Region SOO 



The Chazy Section 5°^^ 



The Isle La Motte Section 503 



The Chazy at Plattsburgh, New York 504 



The Valcour Island Section. 505 



The Crown Point Section 5^^ 



The Chazy at Orwell, Vermont 5°7 



The Canadian Exposu-res 5^7 



Summary on Lake Champlain Region 5°7 



Contact with other Formations 5°^ 



The Ottawa Valley Region 5°^ 



The Mingan Island Region 5°9 



Sections and Faunal Lists in the Lake Champlain Region 5'^ 



Sections on Valcour Island. 



Section A, Valcour Island 5'^ 



Section C, Valcour Island 519 



Section D, \'alcour Island 522 



Remarks on the Valcour Island Sections. 



Correlation of Sections 525 



Subdivision according to Faunules 525 



Stations on Valcour Island 527 



Stations at N'alcour, New York 534 



Station at Plattsburgh, New York 537 



Sections at Chazy, New York. 



Section D, Chazy, New York „ 53S 



Section E, Chazy, New York 540 



Section F, Chazy, New York 543 



Station at Chazy, New York 545 



Stations at Cooperville, New York 545 



LJiscussion of the Faunas of the Chazy and \'alcour Island Sections 547 



Division of the Chazy Section 548 



Faunules in the typical Chazy 549 



Section at Crown Point, New York 551 



Comparison of the Crown Point, Valcour Island, and Chazy Sections 552 



Comparison of the present Section at Crown Point with that made by Brain- 



erd and Seely 553 



Region north of the Canadian line 554 



