NAVAL OFFICERS 



THEIK HEEEDITY AND DEVELOPMENT 



BY 



CHARLES BENEDICT DAVENPORT 



DIRECTOR OF DEPARTMENT OF EXPERIMENTAL EVOLUTION AND OF THE 

 EUGENICS RECORD OFFICE, 



MARY THERESA SCUDDER 



RESEARCH COLLABORATOR IN THE 

 CARNEGIE INSTITUTION OF WASHINGTON 



PUBLISHED BY THE CARNEGIE INSTITUTION OP WASHINGTON 

 WASHINGTON, 1919 



