CO^NTTENTS. 



Sharp, Benj., M. D. On Visual Organs in Solen (continued), . 



Meehan, Thomas. Notes on Glaciers in Alaska, 



Meehan, Thomas. Favorable Influence of Climate on Vegetation in 

 Alaska, 



WiLi-cox, Joseph. Notes on Glacial Action in Northern New York and 

 Canada, 



Martindale, Isaac C. Obituary Notice of Charles F. Parker, 



Heilprin, Angelo. On the Value of the "Neaictic" as one of the Pri- 

 mary Zoological Regions. Replies to Criticisms by Mr. Alfred Rus- 

 sel Wallace and Prof. Theodoie Gill, 



McCooK, Rev. H. C, D. D. Note on Two New California Spiders and 

 their Nests, 



McCooK, Rev. II. C, D. D. A AVeb-Spinning Neuropterous Insect, 



Jordan, David S. Notes on American Fishes preserved in the Museums 

 at Berlin, London, Paris and Copenhagen, . 



McCooK, Rev. H. C, D. D. The Oicident Ant in Dakota, 



Mitchell, Chas. L. Staining with Haematoxylon, . 



Lewis, H. Carvill, Gold I'rom North Carolina, 



Cope, Edw. D. On Extinct Rhinoceri from the Southwest, 



Leidy, Joseph, M. D. A Fungus infesting Flies, 



Leidy, Joseph, M. D. On Manayunkia, .... 



McCook, Rev. H. C, D. D. How a Carpenter Ant founds a Formicary, 



Randolph, N. A., M. D. A Study of the Distribution of Gluten within 

 the Wheat Grain, 



Parker, Andrew J. , M. D. Reproduction of Amphileptus fasciola, 



Report of the Recording Secretary, .... 



Report of the Corresponding Secretary, 



Repoi"t of the Librarian, ...... 



Report of the Curators, 



Summary of the Report of the Treasurer, 



Report of the Biological and Micro:- copical Section, . 



Report of the Conchological Section, .... 



Report of the Entomological Section, . . . . 



Report of the Botanical Section, 



Report of the Mineralogical and Geological Section, . 



Report of the Professor of Invertebrate Palaeontology, 



Report of the Profes-or of Mineralogy, 



Reportof the Curator of the Win. 8. Vaux Collections, 



OflBcers for 1884, 



Elections during 1883, .... 



Additions to the Museum, 



Additions to the Library, 



Index to Genera, 



General Index, 



249 

 249 



255 



257 

 260 



266 



276 



278 



281 

 294 

 297 

 301 

 301 

 302 

 302 

 303 



308 

 313 

 315 

 319 

 319 

 322 

 323 

 327 

 327 

 329 

 331 

 333 

 334 

 384 

 336 

 337 

 B'dS 

 339 

 344 

 369 

 374 



1 i. T36 SANSOV 



