298 JOURNAL OF THE WASHINGTON ACADEMY OF SCIENCES VOL. 11, NO. 13 



With compounds these problems become much more complicated, 

 that is, if we try to explain them in terms of atomic structure. Among 

 organic compounds we find isomers and polymers, and many of them 

 contain a hundred or more atoms to the molecule. How are their 

 electrons rearranged, and what are they doing? All of these com- 

 pounds, as I have already shown, are items in the general scheme of 

 the evolution of matter, in which the question of atomic structure 

 is fundamental. I have in this paper only touched the surface of 

 a vast general problem, but my imagination has never wandered 

 far from evidence and reasonable analogies. Perhaps I have made 

 suggestions which may lead others to the discovery of new truths. 



MINERALOGY. — On galenobismutite from a gold-quartz vein in Boise 

 County, Idaho. '^ Earl V. Shannon, Department of Geology,. 



United States. National Museum. (Communicated by E. T. 



Wherry). 



The mineral galenobismutite, first described by Sjogren from the 

 Ko Mine, Nordmark, Sweden^ has not heretofore been definitely 

 identified at any second locality. The material from Fahlun, Sweden, 

 described by Atterberg^ contains more selenium than sulfur and is 

 doubtless either a mixture or a variety of weibullite or platynite. 

 It is listed as a distinct species by Hintze'' under the name "selenblei- 

 wismuthglanz."^ Alaskaite, included by Dana under galenobismutite, 

 is regarded by Hintze and also by Wherry and Foshag as a distinct 

 species.^ The lead sulfo-bismuthite from the tungsten veins of Deer 

 Park, Washington, analyzed by R. C. Wells and described by Bancroft^ 

 as intermediate between galenobismutite and cosalite is quite probably 

 distinct from either. It thus appears that galenobismutite, properly 

 so-called, is an exceedingly rare mineral. For this reason it becomes 

 of interest to note that this mineral occurs as a constituent of a gold 

 ore from Idaho preserved in the United States National Museum. 



'Published by permission of the Secretary of the Smithsonian Institution. Received 

 May 25, 192L 



' H. Sjogren. Geol. Foren. Forh. 4: 109. 1878. 



3 Atterberg. Geol. Foren. Forh. 2: 76. 1874. 



* C. HiNTZE. Handbuch der Mineralogie, 1: 1012. 



* E. T. Wherry and W. F. Foshag. A new classification of the sulfo-salt minerals. This 

 Journal 11: 1-8. 1921. 



* HowLAND Bancroft. Notes on tungsten deposits near Deer Park, Washington. U. S.- 

 Geol. Survey Bull. 430: 216. 1910. 



