1 90S.] 
NATURAL SCIENCES OF PHILADELPHIA. 
G37 
The communications made during the year may be briefly sum- 
marized as follows : Uses of the microscope in testing chemical prepa- 
rations, by Dr. D. E. Owen; Leucocythemia, the Tsetze Fly and various 
contagious diseases, by Dr. T. S. Stewart; opaque illumination and 
numerous other subjects, by Mr. F. J. Keeley; miscellaneous objects 
exhibited and described by Mr. William B. Davis; new and rare forms 
of diatomacese, by Mr. C. S. Boyer; rare forms of diatoms from Barba- 
does, by Mr. J. A. Shulze; the organisms contained in various infusions, 
by Mr. John G. Rothermel; other communications, by Mr. T. C. 
Palmer, Mr. W. H. Van Sickel and Mr. Hugo Bilgram. 
The officers elected for the year 1909 are as follows: 
Director, . . . . . J. Cheston Morris, M.D. 
Vice-Director, ..... T. Chalkley Palmer. 
Conservator, . F. J. Keeley. 
Record er, . . . . . C. S. Boyer. 
Corresponding Secretary, . . S. L. Schumo. 
Treasurei', ...... Thomas S. Stewart, M.D. 
Charles S. Boyer, 
Recorder. 
Entomological Section. 
During the present year ten meetings of the Entomological Section 
have been held with an average attendance of ten persons. As usual 
the large number of additions to the cabinet has necessitated the 
greatest amount of work in the department. The large collection 
of American butterflies made by Dr. Henry Skinner, numbering over 
10,000 specimens, was purchased by the Academy. Dr. F. D. God- 
man has presented 3,529 Coleoptera, representing 1,140 species, from 
the Biologia Centrali- Americana collection, a most valuable addition. 
One hundred and eighty-four insects from Burma were purchased 
from W. Crumb. Dr. Henry Skinner presented 56 Lepidoptera from 
various parts of the United States. Seven hundred Orthoptera were 
collected by the Academy expedition to Virginia and North Carolina, 
conducted by Mr. J. A. G. Rehn. About five hundred Orthoptera 
were presented by Witmer Stone, Morgan Hebard and J. A. G. Rehn, 
from Pennsylvania and New Jersey. One hundred and fifty-four 
Brazilian Orthoptera were purchased from C. F. Baker. Two hundred 
Diptera from British Guiana were received from Charles T. Greene. 
In all over 16,000 specimens of insects were added to the collection. 
Two hundred Schmitt boxes and four Brock tin cases were pur- 
chased. 
