

CONTENTS 



Original Papers Pa g e 



derived from the Ives and Kingsbury new ^ 

 [JlD " F ° OTE " I ... 319 



Physics-A visibility equation <*«™£ 

 luminosity equation. Paul D. Foote 

 Genetics.-The control of the sex ratio. Oscar Riddle 



Abstracts 



357 



Geology 



Proceedings 



358 



The Biological Society of Washington . . \\ .'.WW. 360 



Thl Anthropological Society of Washington 



