THE 



AMERICAN NATURALIST 



Vol. L. October, WW No. 598 



A NOTE ON TI1K INHERITANCE OF EYE 

 PATTERN IN BEANS AND ITS RE- 

 LATION TO TYPE OF VINE 1 



FRANK M. SURFACE 



In a recent paper (Pearl and Surface, 1915) from this 

 laboratory two varieties of yellow-eyed beans were de- 

 scribed and figured under the somewhat provincial names 

 of Improved Yellow K\ <> and Old-Fashioned Yellow Eye. 

 The type of eye pattern characteristic of each of these 

 varieties is shown below in Figs. 1 and 2. On the Im- 

 proved Yellow Eye the colored area covers about one 

 fourth the area of the bean. The outer border of the eye 

 pattern is clear-cut and regular, with very little or no 

 spotting on the remainder of the bean. 



The Old-Fashioned Yellow Eye pattern (Fig. 2) is 

 much smaller in area and is quite irregular in outline but 

 nevertheless very definite. It consists of at least three 

 color centers: (1) A posterior 2 spot covering the caruncle 

 and extending at least part way around the hilum. Lat- 

 erally this area is extended into two rather broad wings 

 whirl, peach as far forward as the micropyle. (2) An 

 anterior spot surrounding the micropyle, and (3) an an- 

 terior stripe which may or may not connect with the 



