436 SEMI-CENTENNIAL OF TORREY BOTANICAL CLUB 
race; the values of [o] and a average slightly lower (TABLES 52 and 
48). 
All plants of the race showed a seasonal decrease (--0) with 
the characteristic relation of laterals and terminals. 
The ancestry of this race diverged from that of the semi-dwarf 
race in that the Е, parent selected was a different plant (no. 6) 
having somewhat lower values of а (19.4) and of [o] (18.3). Тһе 
selection for this race has not been consistently for.lowest values 
of a, as the plant of the F; used as parent (A X E») — 4-6 —no. 3) 
was the one having highest values for a. The Е, has shown an 
increase of average of a over that of the preceding generation. 
TABLE 52 
STATISTICAL CONSTANTS FOR TWO GENERATIONS (Fs AND F4) OF A DWARF, SPARSELY 
BRANCHED RACE (RACE 2). ANCESTRY GIVEN IN TABLE 50 
Pedigree Lordi wr pd | o]. os t 
Fs. (А X Em)-4-6- 
no. 16.4 I2 |— 5.26| 68.53] 17.4 | —0.081, 29 
Өс: 17-1 17 |- 9.89|183.26| 18.1 |—0.055| 51 
желең 16.1 26 |-36.07 1355.68 | 18.7 ,—0.099| 68 
M: xu 16.7 32 |--36.12 |471.30 | 19.2 |—0.077| 70 
A csl 16.6 I4 |—16.50) 89.29] 19.2 |—0.183, 39 
3 18.0 | 22 |—31.01 |255.64| 20.7 |—0.121| 48 
Е. (A X Е»)-4-6-3- | 
17 1164 ТА |— 340| 02,50] 18.1 |-70.030 |. 29 
” 18.1 I £p 2.26 41:57] 18.9 -9.0991 19 
еб 18.2 I2 |- 3.40! 45.88 | 19.1 |—0.076| 21 
3 | 17.9 | 17 9.43 131.46| 19.1 |—0.071| 36 
v | 16.8 | 22 26.88 |205.77 | 19.7 |—0.134| 45 
“йі | 17.7 | 16 |-і2.60| 90.50 | 20.0 |-о.141! 30 
ws 17611 — 17.04 |113.25 | 20.3 |-0.157 |. 34 
ат | 18.2 | 16 A631 07.337[ 26:5 |7014} 32 
"аз 18.6 | 16 |-т7.03 1100.55 | 21.3 1--0-171! 31 
The performance of this raceindicates that extreme dwarfing 
in chicory affects decidedly the total number of heads produced, 
but has no pronounced effect in reducing the average number of 
flowers per head or in changing the general character of intra- 
seasonal partial variability as exhibited by minus values of 5. 
C. Characteristics of a race exhibiting a second period of growth 
during a single season (race 3 or line (A X Е»)-о0-5-). Тһе 
peculiar and unusual habit of growth seen in this race has already 
been described and reference made to the illustration (TEXT- 
FIGURE I). Detailed data for three plants of this race have 
