12 



Eugenics Record Office, Bulletin. 



Plats I. 



Example of a simple pedigree chart. 



« '[f^ 



n 



'o 



•s- ' 





J, 



in 



N 



2 3 



4JL sUfc. 6 



4 5 6 7 



s '6 '& 



SAs 6W 7, 



ioik 



