518 



CHARLES ZELENY AND E. W. MATTOON 



TABLE 1 



Plus selection 



Line A 



corresponding figures for the three selections are 110.1, 128.6 

 and 141.9, and in plus line C, 116.9, 133.5 and 141.0. In minus 

 line D the general population mean of 98.0 is changed to 88.3 

 by the first selection, to 85.5 by the second and to 81.7 by the 

 third. In minus line E the corresponding figures for the three 



