122 CARNEGIE INSTITUTION OF WASHINGTON. 



A. General biological pedigree investigations — Continued. 



4. Family distribution of personal traits, the so-called plan II; also an indefinitely 

 expansible loose-leaf system, of which the individual analysis card is the unit. 

 This is the most detailed and valuable and also the most difficult of all the schedules. 

 It should not be asked for until the record of family traits has been successfully 

 filled out. 



B. Short schedules for special-trait pedigree records: (1) Musical talent; (2) mathematical 



ability; (3) tuberculosis; (4) hare-Mp and cleft-palate; (5) hair form, hau- and eye 

 color, and complexion; (6) stature; (7) physical measurement record; (8) twins; (9) 

 special trait card. These schedules are sent free in duplicate to such persons as will 

 undertake to fill them out and, after retaining one copy for their own family archives, 

 will file the other with the Eugenics Record Office. 



The record of family traits is based upon Galton's original outline. 

 Of these, 2,618 had been secured by the volunteer cooperation on the 

 part of the families described. Of the schedules later prepared, 15 

 of the family distribution of personal traits were on hand; there were 

 54 of the records called "index to germ-plasm"; 46 individual analysis 

 cards; 576 special schedules on stature; 646 eye, hair, and skin color 

 schedules; and 303 other special-trait records, including musical, mathe- 

 matical, tuberculosis, epilepsy, and deafness. There were 5,375 cards 

 indexed in the hare-lip study. 



A library of 3,093 books, besides numerous institution reports, has 

 been accumulated. 



7. To investigate other eugenical factors, such as mate selection, 

 differential fecundity, differential survival, and differential migration: 

 These studies are demographical and sociological in nature and their 

 development will follow rather than precede those phases of eugenical 

 investigation bearing more directly upon the phenomena of inheri- 

 tance. A study of 1,054 unselected subnormal famiUes, described by 

 field workers, contrasted with a similar study of 701 families from our 

 better American stock, showed that in the subnormal famiUes the 

 average number of children per family was 4.4, while in the normal 

 families the average was 4.6; that the infant mortahty (those dying 

 under 3 years of age, including stillbirths) was 17.4 in the subnormal 

 and 8.3 in the normal. 



8. To advise concerning the eugenical fitness of proposed marriages. 

 This is a service which is being used with continually growing fre- 

 quency. Most inquiries grow out of two situations : first, contemplated 

 cousin matings ; second, the marriage of persons in one or both of whose 

 famiUes there is a neuropathic taint. Persons making request for 

 advice along these Unes are always required to prepare family-history 

 studies in accordance with instructions given by the office. Eugenical 

 advice is then rendered in accordance with the limitations set by the 

 facts presented and the existing knowledge of the inheritance of traits. 

 The pedigrees submitted are added to the archives of the office. 



9. To publish the result of researches. Up to January 1,1918, there had 

 been pubHshed 18 bulletins, 2 memoirs, and 1 report, as follows: 



