CONTENTS 



Oriqinax. Papers 



Page 



Ordnance. — Developments in artillery during the war. John Headlam.. . 301 



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

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

 Wherry 319 



Abstracts 



Physics 328 



Geochemistry 328 



Proceedings 



Washington Academy of Sciences 330 



Biological Society 330 



Anthropological Society 331 



Scientific Notes and News 334 



