520 



CHARLES ZELENY AND E. W. MATTOON 



TABLE 3 



Plus selection 



Line C 



(137.0) and the mean of the three minus Hnes (83.7) is lower 

 than the lowest extreme individual of the three plus lines (89.0). 

 The coefficients of variability as given in table 7 show on the 

 average a slight decrease in the selected stock as compared with 

 the general unselected population. This difference however can- 



