CONTENTS 



PaKe 



Original Papers 



Mineralogy. — -Bementite and neotocite from western Washington, with conclusions 

 as to the identity of bementite and caryopilite. J. T. Pardee, E. S. LarsEN, Jr., 

 and George Steiger 25 



Paleontology. — Shell regeneration in a Pennsylvanian brachiopod. W. Armstrong 

 Price 32 



Proceedings 



Philosophical Society 37 



Chemical Society 40 



Scientific Notes and News 44 



OFFICERS OF THE ACADEMY 

 President: AIvFrbd H. Brooks, Geological Survey. 

 Corresponding Secretary: Robert S. Sosman, Geophysical Laboratory. 

 Recording Secretary: William R. Maxon, National Museum. 

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



