452 PROCEEDINGS OF THE NEW YORK MEETING 



The presentation of scientific papers was introduced by the annual 

 address of the President, entitled : 



OUR SOCIETY 

 BY THE PRESIDENT, JOHN J. STEVENSON 



This address is printed as pao;es 83-98 of this volume ; also in Science, 

 volume ix, pages 41-52. 



Following the President's address the second paper of the program 

 was read : 



ARCHEAN-POTSDAM CONTACT IN THE VICINITY OF MANITOU, COLORADO 



BY W. O. CIIOSBY 



This paper is printed as pages 141-164 of this volume. 



The Society adjourned for lunch and reconvened at 2.15 o'clock p m. 

 In the absence of President Stevenson, First Vice-President Emerson 

 occupied the chair during the afternoon session. The first paper of this 



session was 



\ 



OUTLINE OF THE GEOLOGY OF RUDSONS BAY AND STRAIT 

 BY ROBEKT BELL 



Remarks were made by the chairman and by J. B. Tyrrell, David 

 White, and H. S. Williams. 



The next paper was 



UPPER ORDOVICIAN FAUNAS IN LAKE CHAMPLAIN VALLEY 

 BY THEODORE G. WHITE 



Contents 



Page 



Introduction 452 



Scope of the investigation 454 



General relations of the sedimentary rocks of the region 454 



Character of the deposits 454 



Summary of the sections examined 45G 



In general 456 



Larrabee point 456 



Shoreham 457 



Crown point 457 



Plattsburg and Cumberland head 457 



Grand isle 458 



Chazy village 458 



Isle la Motte 458 



Highgate Springs 458 



Range of particular faunas and species 459 



Conclusions 461 



Discussion 461 



Introduction 



This paper is a prelirainary study of the faunas contained in strata of the Black 

 River, Trenton, and Utica formations in the valley in which lake Champlain lies. 



