150 CARNEGIE INSTITUTION OF WASHINGTON. 



ELIMINATION OF MONGREL BLOOD BY OUT-BREEDING. 



Statistical studies on the relation between the number of chromo- 

 somes characteristic of the species and the rate of the elimination of 

 mongrel blood by the pure-sire system of breeding (on the assumption 

 of no "crossing-over") are being made by Dr. Laughlin. A prelimi- 

 nary report of this work was given before the Society for Experimental 

 Biology and Medicine on May 24, 1919. 



ARCHIVES. 



A large and important part of the current activities of the Office is 

 devoted to the securing, filing, and indexing of data to be available for 

 special studies. 



Schedules. — For the purpose of the collection and recording of data, 

 schedules are prepared and are distributed to collaborators or held in 

 the office, as the case may require. Three of these schedules were 

 printed during the year: 



(1) Schedule for the cooperative use of genealogists and biographers. 

 This is a 4-page, 5 by 8 inch folder. This was issued in November 



1918, and is designed for the use of genealogists and biographers (a) 

 in listing the families and individuals being studied, and (6) describing 

 the forms and methods used in securing, recording, and preserving 

 biographical and family-history data. Also (c) it urges the desirability 

 of recording in the usual family history and biographical studies more 

 data descriptive of inborn physical, mental, and temperamental traits. 



(2) Index of fragmentary data or abstract form. This is a single 

 5 by 8 inch sheet, issued March 1919. The purpose of this sheet 

 is to facilitate the condensation and preparation for permanent filing 

 and proper indexing of the fragmentary data which come to the atten- 

 tion of the office from time to time; also for abstracting from letters 

 and other sources fragmentary data and references of eugenical im- 

 port which, if preserved only in the original form, would probably 

 ultimately be lost in the dead-files. 



(3) Study of heredity of weight, a single 5 by 8 sheet, issued April 



1919. This schedule is patterned after a similar form on stature, 

 which latter proved very valuable in securing pedigree records. 



Clippings. — The new system of filing newspaper clippings has been 

 installed and is developing satisfactorily. For this work 5 by 8 inch 

 manila pockets or envelopes without flaps are provided as containers. 

 The clippings are pasted on manila sheets which fit into these envelopes, 

 which are then duly indexed and added to the proper file, according to 

 whether the clippings are biographies or descriptive of special traits. 

 4,000 envelopes have been opened, which at present contain 4,800 

 sheets of biographical material and 575 of special trait descriptions. 



FILER'S HAND BOOK. 



New instructions for classifying, filing, and indexing. — A new scheme 

 for classifying, filing, and indexing all records, books, and correspond- 



