196 THE AMEBIC AN NATURALIST [Vol. XLIII 



The principal abbreviations of the names of hair colors 

 are as follows: br, brown; chest, chestnut; dk, dark; fl or 

 flax, flaxen; gold, golden; It, light; med, medium; n, 

 black; v, very; yell, yellow. Names of colors in paren- 

 theses ( ) indicate juvenile condition. 



Classification of the Tables— Three series of tables 

 may be considered. A, including cases where black or 



A. Heredity in Absence of Black or Brown Pigment 

 in Parentage 



Table I. Distribution of Hair Color in Offspring when Neither 

 Parent shows Brown Pigment 







Kit 4 



Hak ! 11 2 



Dex 1 1 4 



Ste-E 2 



Reg-A 6 



Edw 3 



Swe 1 2 1 



flax flax flax flax flax flax 



blond blond blond blond blond blond 

 gold flax br. br. It. br. N(flax) 

 gold ^ gold gold gold gold gold 



brown pigment is absent from both parents ; B, including 

 cases when brown is present in both parents and red is 

 not visible in either ; and C, including cases where both 

 brown and red are visible in the parentage. 



B. Heredity of Black and Brown Pigment in 

 Parentage 



Table II. Distribution of Hair Color in Offspring of Parents One 



of whom has the Least Intensity of Brown (Flaxen, 

 Golden) and the Other a Slightly Greater 



Intensity of Brown (lt. br.) 



The foregoing 7 families, comprising 36 children, illus- 

 trate a simple case. When both parents lack the brown 

 pigment the children will all lack it. When the diffuse 



