1916.] NATURAL SCIENCES OF PHILADELPHIA. 627 



MlNKHALOGICAL AND GEOLOGICAL SECTION FOR 1916. The 



Section held four meetings, with increased average attendance. 

 Communications were made by Prof. Thomas C. Brown, on Paleozoic 

 Reef Deposits and on Petroleum and Natural (las in Butler County. 

 Pennsylvania; by Mr. F. Lynwood Garrison, on the World'- Supply 



of Minerals, and by Prof. Florence Bascom, on some of the National 

 Parks. Other subjects of geological or mineralogical interest were 

 discussed. 



There were four field excursions, with an average attendance of 20. 

 The places visited were: (1) portions of the New Red Gwynedd 

 shales and Xorristown shales, also Hudson River shales, all in Bucks 

 County; (2) certain exposures of crystalline rocks between Philadel- 

 phia and West Chester; (3) crystalline rocks and their minerals 

 near the southern edge of Delaware County; (4) crystalline rocks 

 and their minerals between Media and Newtown Square, Delaware 

 County. 



The following officers of the Section have been elected for the 

 year 1917: 



Director Benjamin Smith Lyman. 



Vice-Director F. J. Keeley. 



Recorder and Secretory W. B. Davis. 



Treasurer and Conservator ..George Vaux, Jr. 



Respectfully submitted by order of the Section, 



Benj. Smith Lyman, Director. 



Ornithological Section. — The Section has been active during 

 the year in encouraging ornithological work at the Academy. 

 The Pennsylvania Audubon Society and the Delaware Valley Or- 

 nithological Club have held their meetings in the building, with the 

 result that a broader interest has been taken in the ornithological 

 department and many valuable accessions have been received. 



November 13-16 the American Ornithologists' Union held its 

 annual meeting at the Academy, bringing to our museum leading 

 ornithologists from all parts of the United States and Canada. The 

 meeting was the largest and most successful ever held by the Union 

 and drew to the Academy large numbers of visitors. 



At the annual meeting of the Section the following officers were 

 elected for the ensuing year: 



Director Spencer Trotter. 



Vice-Director ..George Spencer Morris. 



