CONTENTS 



Original Papers 



Page 



Chemistry. — The evolution of matter. Frank WigglesworTh Clarke 289 



Minerology. — On galenobismutite from a gold-quartz vein in Boise County, Idaho. 



Earl V. Shannon 298 



Botany. — A remarkable new species of Ichthyoihere. S. F. Blake 301 



Radiotelegraphy. — A chronographic recorder of radio time signals. E. A. Eckhardt 



and J. C. KarchER 303 



Abstracts 



Optics 311 



Geodesy 312 



Zoology 312 



Metallurgy 312 



Chemical Technology 313 



Radiotelegraphy 313 



Proceedings 



Philosophical Society 313 



Biological Society 315 



Scientific Notes and New^. 317 



OFFICERS OF THE ACADEMY 



President: Alfred H. Brooks, Geological Survey. 

 Corresponding Secretary: Robi^rT B. Sosman, Geophysical lyaboratory. 

 Recording Secretary: William R. Maxon, National Museum. 

 Treasurer: R. L. Faris, Coast and Geodetic Survey. 



NOTE 



The July and August numbers of the Journal have been delayed on account of strikes 

 in the printing trades. 



