RECORDS OF MEETINGS 195 



The following programme was then offered : 



G. Sherburne Rogers, Geology of the Cortlandt Series and its 



Emery Deposits. 

 A. W. Grabau, North American Types of Lower Paleozoic 



Sedimentation in Northern Scotland. 

 A. A. Julien, The Evidences from the Palisades on the 



Genesis of Antigorite. (Bead by title.) 



Summary of Papers. 



Mr. Rogers illustrated his talk on the distribution and structure of 

 the Cortlandt Series with many lantern slides. Remarks were made by 

 Professor J. F. Kemp. 



Dr. Grabau emphasized the similarity of development in correspond- 

 ing sections of Europe and America and made some general suggestions 

 as to former land connections. 

 The Section then adjourned. 



Charles P. Berkey, 



Secretary. 



SECTION OF BIOLOGY. 



13 March, 1911. 



Section met at 8:15 p. m.. Vice-President Frederic A. Lucas presiding. 

 The meeting was devoted to the following public lecture : 



George A. Soper, Scientific Aspects of the Work of the Metro- 

 politan Sewerage Commission. 



Dr. Soper, President of the Metropolitan Sewerage Commission, has 

 done a great amount of scientific work in connection with the investiga- 

 tions of the commission upon the pollution of the waters of New York 

 harbor from various sources. The most interesting features of this work 

 and its results were dwelt upon in popular manner by the lecturer. The 

 paper was illustrated with lantern slides. 



The Section then adjourned. 



L. HUSSAKOF, 



Secretary. 



