A WORD OF THANKS. 



In grateful memory, I would 

 acknowledge my indebtedness to 

 the late Frances E. Willard. 



In my humble efforts to popu- 

 larize the study of heredity, for 

 years her wise counsel and words of 

 encouragement were a constant in- 

 spiration. Her parting words to 

 me, "God bless you, brother; go on!" 

 spoken a few weeks before the 

 Father called her home, now form 

 a most sacred memory and hallozved 

 benediction. 



I would also acknowledge my in- 

 debtedness to Louise E. Francis for 

 her efficient service in searching the 

 libraries of the country. Without 

 her faithful assistance in comparing 

 and compiling statistics many valu- 

 able facts here published must have 

 been omitted, N. N. R. 



