434 Tricotylous Races. 
VALUES OF THE OFFSPRING NUMBER OF 
LOWEST MIDDLE HIGHEST SEED-PARENTS 
A 41% 31 45 67 16 
B 41% 22 50 79 22 
Since these two cultures may be regarded as typical 
of ordinary intermediate races, not subjected to improve- 
ment by selection, I will give the full series of figures 
for one of them (B). They are as follows: 
56 58 59 
71 
79 
60 
60 
50 
51 
55 
55 
55 
41 
42 
46 
47 
47 
35 
36 
39 
22 
25 
Written in this way the figures show, without any 
further treatment, a group in the form of a curve the 
apex of which was between 50 and 55%. 1 
I planted out the grandchildren of the plant B only, 
and selected for this purpose (1897) the two parents 
with 71 and 79%. The two cultures consisted of tri- 
cotylous plants only, flowered on separate beds, fertili- 
zation being left to the agency of insects, however, as in 
previous years. The result of the determination of the 
values in the spring of 1898 was as follows: 
_ HEREDITARY VALUES OF THE OFFSPRING NUMBER OF 
LOWEST MIDDLE HIGHEST SEED-PARENTS 
C 11% 34 62 74 23 
D 79% 48 64 79 24 
In comparison with the previous year, therefore, an 
advance had taken place in the mean values but not in the 
maximum. 
1 It is my custom to plot the harvest raised from each parent and 
from each grandparent in this way. When grouped in this manner 
the figures display the result very graphically; and immediately show 
whether it falls outside the limits of observational error ; and whether 
therefore the existence of differences between the individuals is 
shown beyond doubt. 
