CONTENTS 



Original Papers 



Page 

 Geochemistry. — Vanadium and chromium in rutile and the possible effect 



of vanadium on color. Thomas L. Watson 431 



Botany. — Pomegranate flowers dimorphic. O. C. Cook 434 



* Abstracts 



Chemistry 438 



Geology 438 



Botany 440 



Forestry 441 



Zoology 442 



Technology 445 



Programs and Announcements 



Chemical Society .' 446 



Bureau of Standards Physics Club 446 



