104 CARNEGIE INSTITUTION OF WASHINGTON. 



their families of young children, and one because he has undertaken, 

 as a war measure, an extensive project for perfecting a superior race 

 of prolific beans. The spirit of response to the urgent call of threatened 

 civilization has not been the less complete in those who have served 

 at home. 



Of those who a year ago were assisting the staff, all the young 

 men except one are in the service. On account of loyalty to their 

 work, and often against their best interests, they remained with us 

 until definitely called to aid in the war. In the autumn Mr. B. T. 

 Avery left with his regiment for France and died there. Mr. Donald 

 S. Welch and Mr. Karl E. Anderson answered the call in the spring. 

 Others of our assistants of last year are now in the service as com- 

 batants or in the Medical Corps. With one exception all laboratory 

 assistants have been replaced by women. 



ACCOUNT OF RESEARCHES IN PROGRESS. 



On account of war conditions no attempt will be made in this report 

 to analyze the relations of the work done to the general problem of 

 evolution. Our first effort has been to maintain breeding-lines upon 

 whose continuity the success of future work depends. This continuity 

 is insured by the able assistants who are carrying on the strains while 

 members of the staff are in various lines of war work. 



Since early in the year the work of the Director has been with the 

 National Research Council and the Sanitary Corps of the Medical 

 Department of the Army. His work has taken him to all but two of the 

 cantonments. In addition to this work he organized and has con- 

 stantly supervised a plant for breeding white mice for the Medical 

 Department of the Army. The present output of this plant is about 

 500 mice per month. The mice are used in testing for pneumonia in 

 Army camps. 



A survey of the organizations, and interviews with the leading 

 representatives, of the Central-European peoples, Balkan states, and 

 Baltic provinces located in New York City was started by the Director 

 and has been continued by his assistant. Miss Mary T. Scudder. This 

 work has been partly subsidized by the National Research Council. 

 The information secured has been regularly supplied to the Govern- 

 ment. The work has been extended to Pittsburgh and Chicago. 



During the early part of the year a beginning was made of a study 

 of the family history and juvenile traits of military officers. Much 

 time was also given to reading the proofs of the book entitled "Naval 

 Officers: Their Heredity and Development." 



Dr. Oscar Riddle reports as follows: 



"Since October 1917, the work with the final proofs of volume i of the 

 Whitman books has been completed. It is expected that this volume will be 



