CONTENTS 



Obiginal Papers 



Page 



Aviation.— Aviation and the war. C. F. Lee 225 



Physics. — Note on the periodic system of the elements. P. V. Wells 232 



Geochemistry. — ^Fluorine in sericitization. Sidney Paige and George 



Steigbr 234 



Crystallography. — ^Note on the fundamental polyhedron of the diamond 



lattice. Elliot Q. Adams 240 



Botany. — A synopsis of the Chinese and Formosan species of Albizzia. P. 



L. RiCKEB 242 



Abstracts 



Physics 247 



Electricity 247 



Physical Chemistry 248 



Geology 248 



Technology 250 



Proceedings 



Washington Academy of Sciences 251 



Philosophical Society 251 



Anthropological Society 256 



Scientific Notes and News 260 



