CONTENTS 



Originai. Papers 



Page 



Geochemistry. — Note on the water of Borax Lake. Roger C. Wells 477 



Petrology. — Obsidian from Copan and Chichen Itza. Henry S. Washington 481 



Entomology. — On the Orthopterous group Phaneropterae ( = Scudderiae), with de- 

 scriptions of a new genus and species. A. N. Caudell 487 



I 



Abstracts 



Geology 494 



Biology 495 



Entomology 495 



Ornithology : 495 



Proceedings 



Philosophical Society 497 



Scientific Notes and News. 499 



