588 PROCEEDINGS OF THE ACADEMY OF [DeC, 



of the new roof of the Museum. New cases have now been ordered, 

 which will enable us to rearrange the specimens during the coming 

 year. Meanwhile work has been continued upon such parts of the 

 collection as were accessible. 



Large accessions have been received from numerous correspondents 

 of the Curator. A list of these gifts may be found in the accessions 

 to the Museum. The largest single accession has been the collection 

 of Hawaiian land snails purchased from Dr. John T. Gulick. This 

 series served as the basis of that author's important studies on evolution, 

 as well as his systematic papers on the Hawaiian fauna. Mr. H. 

 Bloomfield Moore has contributed largely to our series of small land 

 mollusks of Georgia and Florida by gatherings of leaves and humus, 

 from which large mnnbers of shells have been picked by Mr. Vanatta. 



The Special Curator has been occupied chiefly with the preparation 

 of the Manual of Conchology, the monograph of the family 

 Achatinidce being completed this year, and the collections of this group 

 revised and relabelled. Studies of American and Japanese mollusks 

 have also been continued. The months of October and November 

 were spent in Arizona and New Mexico, chiefly in the Grand Canyon 

 of the Colorado, the Florida and Chiricahua Mountains, and large 

 collections of the mollusca of these regions were obtained. 



Mr. E. G. Vanatta has continued his efficient work as Assistant in the 

 department throughout the year. 



H. A. PiLSBRY, 



Special Curator. 



REPORTS OF THE SECTIONS. 



The Biological and Microscopical Section, 



The Section has held nine stated and several informal meetings with 

 the usual attendance. 



The donations reported by the Conservator are as follows: One 

 Zentmayer histological microscope with three objectives; one Fiddian 

 and one Acme microscope lamp; about 400 slides, including two 

 Moller type plates and an arranged monogram mount by Thum: 

 about twenty-five books, including Van Heurck's Diatoms of Belgium, 

 the Micrographic Dictionary, and a lot of unmounted material and 

 mounting apparatus. All the above are from the collection of the late 

 John C. Wilson, presented by Miss Maria S. Wilson. 



