Trifoliiun Incarnatum Qiiadrifolinm. 235 
at the beginning of the flowering period, several indi- 
viduals exhibited one or more 4-foliate 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. Trifolium 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 % (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 1 of the following 
composition. The first row gives the number of 4- or 
5-foliate leaves per plant, and the second the number of 
1 4, p. 26 ; and Ueber halbe Galton-Curven, Ber. d. d. hot. Ges., 
1894, Vol. XII, p. 197- 
