THE GENOTYPICAL RESPONSE OF THE PLANT 223 
seen from the table. The increase in the case of series 34 and 35 was 
greatest the year after the transplanting. The dwarf habit was at 
that time thought to be an unquestionable case of modificatory dwarf- 
ing, which would disappear in time. For this reason no measure- 
ments were made in 1920. In 1921 the height of the plants was sur- 
prisingly like that already attained the preceding year, and the suspi- 
TABLE IT. 
Field Length of | ER of | pense of Field Length of Dengue of | BEL of 
N:o stem when, stem in stem In Neo stem when! stem in | stem in 
transpl. 11921 1922 transpl. 1921 1922 
341 | 43 130 145 35,06 | 73 325 330 
02 | 64 200 210 7 | 1% 710 740 
02 12.058 140 170 3: 22,89 650 620 
4 | 72 175 180 09 | 54 490 515 
5 BAe 470 165 10 |? 50 190 200 
Re 156 160 11 47 92.63 185 200 
7 667.51, 20 120 12 35 200 210 
8 68 =.) © 235 245 13 | 42 345 360 
9 Zr EE 200 210 14 | 63 115 125 
MONS 80.1.0345 370 EN GS TT el 
PET BH | 100 210 | | 2 
| 12 48. | 265 a5 SDS 420 N ey 
be 43 39 395 330 el > as 
a) 915 290 nt Eten 
14115 5° [72365 280 HAE a = 
146 72 | 19 | 130 5| 510 | 500 635 
| | | a 6. 590 | 565 600 
35,1 7% BOO... S/he: 400 7 635 610 640 
2 80 195 210 8 380. | bab shag, 700 
“ae 34 520 575 9 700...) 580 690 
BA 56 570 615 10 620 595 } > 650 
Reste 59 215 210 
cion arose that the variation seen in the series as to the height of the 
different individuals was of a hereditary nature. The different heights 
observed in 1921 do not fall much lower than those observed in 1922. 
As the summer of 1922 was considerably wetter than that of the pre- 
ceding year the slight increase in the height of most of the individuals 
in 1922 is most probably due to differences in weather con- 
ditions. 
| It is further seen from the table that series no. 35 includes a 
