STOUT & Boas: STATISTICAL STUDIES IN CICHORIUM 417 
a very high value for a. The other plants of this series, however, 
show a range of variability similar to that of the other series. 
In the third year one plant of the series (E; X C) had a very low 
number of flowers per head, but the rest of the series agrees with 
the general distribution of the other series. 
TABLE 37 
DISTRIBUTION OF FLOWER NUMBER PER HEAD (а) FOR ONE-YEAR, TWO-YEAR, AND THREE-YEAR-OLD 
PLANTS OF DIFFERENT LINES 
One year old Two years old Three years old 
Sors re Р | 
nire КЫ < аа << t a - ч НЕСІ ң ве -- вт „| 5 
ane че а ухае xx xxx че а ш а xS 
X| Xs хо aid XXX X ge х sa XX XXX ях ах 
w]e] ч кщ с GIG) S| x Ws ж s 9-2 9/3 OP x[x| 8| x| 3| 9| 8| 9 
16.0-.2 че: 
3-.5 а 
.6—.8 a I I 
.0-.І 2 
17.2—.4 І І EIE 
Sp d Jic i Y 
.8-.0 alt та |: Дт n e 
18.1—.3 ГЕН = I .|2 I 
4-. I|..[i1!3 I I I 2% І І 
T ЖЕЛТ I Y I Ss 
I9.0—.2 DET. Ib Lr I iada I 
$5 ЖЕБСЕТ І я I rir И, 
.6—.8 fi. I га A G dE a eo ELE 
—I Tl t I ТЕГА І THIS I 
20.2—4 I 2 2 |т т 25 Cen ta I 
4 ES I I 1|2 2 I т|2 I т |т 
I 2|I ism =. 312 2 І 3 
21.1-.3 t1. ЕЕ Ei iria I 
4--6 т бы ок ке i3 I|: Li 
5-9 т 2-2 ilr I 
22.0-.2 Дж tit 
3—.5 түт І 
6-.8 I 
9-.1 
23.2—4 ү, 
9» І 
.8-.0 бен Ке РОВ ЕЕ Rp Зат ере наре рер 
24.1-.3 СИ Те ЕО ТУЗ У ОАА АКОИ АЛА к Күнү e Ж екы Жайы. ке СЕ. 
It is quite evident then from this table that the differences in 
the distribution of lower number between the different series are 
not great enough to influence the coefficient of correlation for 
plants of different ages. | 
The plants А and C were at least in the third year of growth in 
1913 when they were first used for data here reported. The 
