THE DURATION OF LIFE 



AND 



CONDITIONS ASSOCIATED 

 WITH LONGEVITY 



A STUDY OF THE HYDE GENEALOGY 



BY 



ALEXANDER GRAHAM BELL 



PUBLISHED BY 

 GENEALOGICAL RECORD 



OFFICE 

 VOLTA BUILDING 1601 35th STREET 



WASHINGTON, D. C. 



PRICE ONE DOLLAR 



APPLIED EUGENICS 



By 



CAPTAIN PAUL POPENOE, U. S. A. 



Former Editor of the Journal of Heredity {Organ of the American 



Genetic Association), Washington, D. C. 



and 



ROSWELL HILL JOHNSON 



Professor in the University of Pittsburgh 



"The resuhs of all the trustworthy observations and experiments have been 

 taken into account . . . This book should command the attention not only 

 of students of sociology, but, as well, of philanthropists, social workers, set- 

 tlement wardens, doctors, clergymen, educators, editors, publicists, Y. M. C. A. 

 secretaries and industrial engineers. It ought to lie at the elbow of law- 

 makers, statesmen, poor relief officials, immigration inspectors, judges of 

 juvenile courts, probation officers, members of state boards of control and 

 heads of charitable and correctional institutions. Finally, the thoughtful 

 ought to find in it guidance in their problem of mating. It will inspire the 

 superior to rise above certain worldly ideals of life and to aim at the family 

 success rather than an individual success." — From the introduction by Ed- 

 ward Alsworth Ross, Professor of Sociology in the University of Wisconsin. 



Price, $2.10 



THE MACMILLAN COMPANY 

 NEW YORK 



