CONTENTS 



' Original Papers 



Page 



Geophysics. — Geophysical Research. A. L. Day 247 



Physics. — A correlation of the elastic behavoir of metals with certain of 



their physical constants. John Johnston 260 



Botany. — A new echeveria from Mexico. J. N. Rose 267 



Abstracts 



Physics 271 



Geology 271 



Economic Geology ; 272 



Entomology 273 



Proceedings 

 Botanical Society 274 



Programs and Announcements 



Washington Society of Engineers •. 274 



Philosophical Society 274 



