Trifoliuni Incarnatum QiiadrifoUuui. 235 



at the beginning of the flowering period, several incH- 

 viduals exhibited one or more 4-fohate leaves ; the anom- 

 aly was therefore a heritable one. 



Moreover the multiplication of the blades had also 

 increased considerably as the result of selection, as the 

 following figures prove. These refer to the offspring of 

 that seed-parent which had already exhibited the anomaly 

 in the previous year. There were 90 of them ; among 

 the offspring of the tricotylous parents ''4-leaves" were 

 not entirely absent, but they were relatively scarce, and 



Fig. 47. Trifoliuni incarnatum. A, a seedling with 

 normal primary leaf. B — D, seedlings with 2- 

 and 3-foliate leaves. The former arise from the 

 larger ; the latter from the smallest seeds. 



the whole group was consequently pulled up at the be- 

 ginning of the following period. About 73 (58 out of 

 90) of the rest were perfectly normal without any in- 

 crease of the number of leaflets. On the average they 

 had about 10 stems and 100 leaves per plant. The re- 

 maining plants formed a half-curve^ of the following 

 composition. The first row gives the number of 4- or 

 5-foliate leaves per plant, and the second the number of 



*§ 4, p. 26; and Uebcr halbe Galton-Curvcn, Ber. d. d. hot. Ges., 

 1894, Vol. XII, p. 197. 



