538 Length of the Fruit in Oenothera Larnarckiana. 



and hoofs). One plant with very long fruits and two 

 with very small fruits were chosen from the harvest, 

 after its curve (Fig. 116 A) had been determined. Their 

 seeds were sown separately in 1892 and moderately ma- 

 nured; the curves of their offspring were determined. 



The result was, as Fig. 116 shows, that the length 

 of the fruit had increased in both cases. We see that 

 this occurred in spite of the choice of short-fruited seed- 

 parents in one-half of the experiment. The effect of 

 manure therefore exceeded that of selection (Fig. 116 

 A, B, and C). 



HARVEST OF 1891. 



To go into the details of the experiment : it must be 

 related that the family in question (1887-1890) was 

 grown in very rich soil but without manure. I selected 



