530 Length of the Fruit in Oenothera Lamarckiana. 



mean length was 24 millimeters. They agree, as a com- 

 parison with the dotted line shows, fairly exactly with the 

 probability curve. 



'^^^ 

 ^^> 



:5H ^ 



IS J^ 



'^\ ^ ^ 



<L> P H 

 t; a < 



rjcoO 



t M-l J 



SOW 



f-H 



^ £a 



2"^ a; 



V be r- 



^ c s 



(U 



Oi) 



HH o aj P 

 bh rt UG S 



If we calculate the values, which we described in the 

 preceding paragraph, from these data we get the follow- 

 ing, in millimeters : 



Minimum Qo M Qp Maximum 



34 



15 



22.2 



24.1 



26.1 



data for this curve appear on page 200. This curve v^^as the first to 

 demonstrate the appHcability of the Quetelet-Galton law^ to the 

 vegetable kingdom. 



