PURE LINES 



253 



TABLE XL. SHOWING VARIATION WITHIN CLASSES IN A POPULATION COMPOSED 

 OF PURE LINES. (From Johannaen) 



It is true that each of the six progeny series corresponds closely to 

 the normal frequency distribution. There is no distortion such as would 

 be expected from mixed material. Nevertheless it becomes evident that 

 the material is heterogeneous as soon as the data are arranged by pure 

 lines as shown in Table XLI. 



TABLE XLI. SURVEY OF THE EFFECT OF SELECTION IN PURE LINES 



(The dark-faced figures indicate mean weights in eg. ; the light-face figures designate 

 respective numbers of seeds.) (From Johannseri) 



