Atavistic Races. 
483 
therefore, be directly compared with those on pages 470 
and 480. The brackets in each case indicate the selected 
seed-parent. 
HELIANTHUS ANNUUS SYNCOTYLEUS. 
ATAVISTIC RACE. 
5 15 25 35 45 55 65 75 8 
5 95 
4th generation 
1897 
3d generation 
1896 
2d generation 
1895 
1st generation 
1894 
Syncotylous 
race, 1892 
01234792 
75812 
v ' 
1 5 12 
t j 
\ 
2 1 3 
V ^ 
| 
We see that the minus selection has actually had its 
effect in that direction. The extremes and the mean have 
regularly decreased. The experiments correspond exactly 
Fig. lop. Helianthus anmms syncotyleus. Hemi-syncotylous 
seedlings with various degrees of fusion of the cotyledons. 
A and B small, C and D larger degrees of symphysis. 
with that with maize, which was represented in Fig. 18 
on page 73 of the first volume, except that in this case 
the change took place in the reverse direction. On the 
