CONTENTS 



Original Papebs 



Page 

 Biochemistry. — The biochemical analysis of nutrition. Carl L. Alsberg 269 



Phytogeography. — The eastern and the western migrations of Smilax into 

 North America. J. B. Norton 281 



Botany. — Agriculture and native vegetation in Peru. 0. F. Cook 284 • 



Abstracts 



Geology 294 



Botany. 296 



Proceedings 



The Washington Academy of Sciences 296 



The Philosophical Society 298 



The Chemical Society. 302 



The Geological Society 309 



The Biological Society . 311 



The Anthropological Society 312 



