1906.] 
NATURAL SCIENCES OF PHILADELPHIA. 
589 
Five slides of marine invertebrates, collected by Dr. Chapman and 
mounted by the Conservator. 
At the regular meetings numerous communications have been made 
by the members on such subjects as rock inclusions, Diatoms, Myxomy- 
cetes and Bacteria. 
There has been a slight increase in membership. 
The officers elected for the year 1907 are as follows : 
Director, 
Vice-Director, 
Treasurer, 
Recorder, 
Conservator , . 
Corresponding Secretary, . 
J. Cheston Morris, M.D. 
T. Chalkley Palmer, 
Thomas S. Stewart, M.D 
Charles S. Boyer. 
F. J. Keeley. 
Silas L. Schumo. 
Charles S. Boyer, 
Recorder. 
Mineralogical and Geological Section. 
Nine meetings of the Mineralogical and Geological Section were held 
during the year with a fair attendance, and the finances of the Section 
are in good condition. Seven excursions were made to interesting 
localities and proved to be enjoyable to all who participated in them, 
as well as an agreeable method of study and recreation. There was an 
average attendance on these occasions of about 30. 
At the annual meeting held December 17, 1906, the following 
officers were elected : 
Director, ..... 
Vice-Director , .... 
Treasurer, ..... 
Recorder, ..... 
Conservator , ..... 
Respectfully submitted, 
Benjamin Smith Lyman. 
George Vaux, Jr. 
Emma Walker. 
Mary S. Holmes. 
Frank J. Keeley. 
George Vaux, Jr., 
Vice-Director. 
The Entomological Section. 
The regular monthy meetings have been held, except during July and 
August, with an attendance of 11 persons. The proceedings of the Sec- 
