CONTENTS 



Original Papebs 



Page 



Chemistry. — Crystals of barium disilicate in optical glass. N. L, Bowen. 265 



Geology. — Correlation of the Tertiary geologic formations of the south- 

 eastern United States, Central America, and the West Indies. Thomas 

 Wayland Vaughan 268 



Crystallography. — Certain relations between crystalline form, chemical con- 

 stitution, and optical properties in organic compounds, — I. Edgar T, 

 Wherrt 277 



Anthropology. — Anthropology as a corrective of provincialism. John R. 



SWANTON 286 



Abstbacts 



Geology , 290 



Proceedings 



Washington Academy of Sciences ' 291 



Philosophical Society 292 



Botanical Society 295 



Biological Society 296 



Entomological Society 298 



Scientific Notes and News 300 



