1908.] NATURAL SCIENCES OF PHILADELPHIA. 637 



The communications made dming the year may be briefly sum- 

 marized as follows : Uses of the microscope in testing chemical prepa- 

 rations, by Dr. D. E. Owen; Leucoc}i:hemia, 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 diatomaceae, 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, 

 Conservator, 

 Recorder, . 



Corresponding Secretary, 

 Treasurer, . 



T. Chalkley Palmer. 

 F. J. Keele)^ 

 . C. S. Boyer. 



S. L. Schumo. 

 . 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-AmericarM 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. 

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