No. 508] IIEBEDITY OF HAIR COLOR IN MAN 201 



of the light color of immature offspring we are able only 

 to compare this section with that which follows. 



Table VII. Distribution of Hair Color in the Offspring when Both 



Parents have Dark Brown or Black Hair 

 (a) When Both Parents Probably Form Light Germ Cells and Dark in 

 Equal Numbers 



Assuming that the qualities of light hair color and dark 

 hair color (or absence and presence of intensifier segre- 

 gate in parents of mixed origin expectation is that benes 

 A would vield 75 per cent, dark haired offspring, but on 

 account of the impossibility of drawing the line between 

 the dark and light shades of hair and on account of the 

 light color of immature offspring we are able only to com- 

 pare this series with series b in which expectation is 100 

 per cent, offspring of the darker color. Actually m 

 series b there are 59 individuals light to 137 (or about 

 70 per cent.) dark while in series a only 55 per cent a 

 dark. A part of these light haired individuals probably 

 result from recessive light hair color of parents and a 

 part from immaturity. 



