}C. 



806 PROCEEDINGS OF THE ACADEMY OF [DeC 



The Conservator reports as an addition to the collection a set of 

 microscopic slides illustrating the structure of the placenta in Mar- 

 supials, presented by Dr. Chapman. 



It has been proposed to hold extra meetings upon certain stated 

 evenings during the year, for informal discussion and for the 

 exhibition of microscopical slides. 



The following officers have been elected : 



Director, .... J. Cheston Morris, M.D. 



Vice- Director, 

 Recorder, 



Corresponding Secretary, 

 Conservator, . 

 Treasurer, 



T. Chalkley Pahner. 

 Charles S. Boyer. 

 Silas S. Schumo. 

 F. J. Keeley. 

 Lewis Woolman. 



CONCHOLOGICAL SECTION, 



The growt h of the collection of mollusks during the year has been 

 satisfactory, although no single large accession has been received. 

 A list of those giving specimens will be found in connection with 

 the Additions to the Museum. The chief gifts in point of extent 

 were the series of Japanese mollusks sent by Mr. Y. Hirase, 

 Zanzibar species from Sir Charles Eliot, and Carolinian land snails 

 from Mr. J. H. Ferriss. The greater portion of the material has 

 been studied and the work on a large part of it is embodied in 

 papers published in the Proceedings of the Academy. 



The completion of the monograph on Bulimulidre has rendered 

 possible the arrangement of that group in the Museum, where two 

 double table-cases now contain the exhibition series. The work of 

 identifying and monographing the Urocoplidse is in progress. The 

 Manual of Conchology has been issued during the year, as hitherto. 



The following officers were elected to serve for the ensuing year : 

 Director, .... Charles W. Johnson. 



Vice- Director, 

 Corresponding Secretary, 

 Treasurer, 

 Librarian, 

 Conservator, . 



John Ford. 

 E. G. Vanatta. 

 S. Kaymond Roberts. 

 Edward J. Nolan. 

 Henry A. Pilsbry. 



