1919.] 
NATURAL SCIENCES OF PHILADELPHIA. 
313 
Weekly excursions were made, except during July and August and 
the winter months, to various localities, for collecting purposes. 
At the suggestion of Mr. H. F. Munro, a class in miscroscopic 
technique has been formed and now meets once a month for the pur¬ 
pose of giving instruction to non-members of the Section. The mem¬ 
bership now numbers about twenty and is open to all applicants. 
Communications on various subjects have been made by the fol¬ 
lowing members of the Section: Messrs. T. Chalkley Palmer, Hugo 
Bilgram, B. F. Ray, Dr. Thomas Stewart, J. W. Palmer, John G. 
Rothermel, Walter Palmer, F. J. Keeley, H. F. Munro, W. H. Van 
Sickel and Charles S. Boyer. 
The following donations to the Sections are reported: 
From Miss Elizabeth S. Brown, the miscroscopical collection of 
Dr. Amos P. Brown, including a Queen Acme microscope, a Leitz 
mineralogical microscope, a Beck petrographical microscope, 
twenty-four objectives, a series of accessories and an object cabinet 
containing about twelve hundred mounted objects. 
From the Estate of Dr. Samuel G. Dixon, a mahogany object 
cabinet, with about two hundred and seventy-five slides of Bacteria. 
The following have been elected officers for the year 1920: 
Director .J. Cheston Morris, M. D. 
Vice-Director .T. Chalkley Palmer 
Recorder .Charles S. Boyer 
Corresponding Secretary .Walter Palmer 
Treasurer .Thomas S. Stewart, M. D. 
Conservator .F. J. Keeley 
Charles S. Boyer, Recorder. 
Entomological Section. —The Section held the usual stated 
meetings during the year, with an average attendance of eleven 
persons. Wm. J. Coxey was elected a member and Robert L. 
Haines, a Contributor. Interesting communications were made 
by J. A. G. Rehn, Philip Laurent, J. H. West, J. C. Bradley, Henry 
Skinner, W. J. Chamberlain, P. P. Calvert, Morgan Hebard and J. 
J. Davis. 
The following officers and committees were elected to serve for 
1920: 
Director .Philip Laurent 
Vice-Director .R. C. Williams, Jr. 
Treasurer .E. T. Cresson 
