A COIN(;ENnM. lU-AZK IN TIIK II MH 



The while loek of hair here shown is hereditary and has been Iraeed definitely tlirough six 

 generati(jns; family tradition traces it on back to a son of Harry "Hot-Spur" Percy, 

 born in 1403, and superstiliously assigns its origin to "pre-natal influence" or "maternal 

 impression." This young woman, wlio is designated as V. 13 in tiie i)edigree cliart of the 

 family (Fig. 10), inlierited the blaze from lier fatiier, who had il from his mother, who 

 had it from her father, a Dr. Little who emigrated to America from England nearly a 

 century ago. The trait appears to be a simi)le dominant, following Mendel's Law, in 

 its distrilnition; that is, when a person with one of these locks marries a normal p':rson, 

 half of the children show the lock and half do not. (Fronlisi)iece.) 

 Sff '•H.Tcrlity of While Forf-lock," p. 16.=;. 



