1921] HARRIS—PHASEOLUS 
T55 
with respect to number of primordial leaves; and a series of weigh- 
ings of total epicotyledonary tissue. 
TABLE I 
MEAN GREEN WEIGHT PER PLANT AND PER LEAF IN SEEDLINGS OF A TETRACOTYLE- 
DONOUS RACE AND IN NORMAL PLANTS OF THE ANCESTRAL RACE 
VALUES PER PLANT VALUES PER LEAF 
SAMPLE 
Abnormal | Control | Difference Pores Abnormal] Control | Difference oa 
Unclassified 
A200. os 0.6991 | 0.7516 |—0.0525| — 6.9 |0.1718 |0.3758 |—0. 2040] —54.2 
Re 0.6972 | 0.7607 |—0.0635| — 8.3 |0.1680 Jo. 3804 |—0. 2124) —55.8 
$O8 ce 0.6323 | 0.7568 |—0.1245| —16.4 |0.1542 |0.3784 |—0.2242| —59.2 
Ps ss ana 0.7012 | 0.6862 |+0.0150] + 2.1 [0.1703 |o.3431 |—0.1638) —47.7 
2 leaves 
BEG. 6. 0.4520 | 0.7263 |—0.2743| —37.7 |0.2260 |o.3632 |—0.1372| —37.7 
SOR cc 0.5958 | 0.7994 |—0. 2036 25.4 10.2979 10.3997 |—0.1018] —25.4 
3 leaves 
4 Gane 0.6313 | 0.7760 |—0.1447| —18.6 |0.2104 |o.3880 |—0.1776| —45.7 
Cs Ee 0.5662 | 0.7189 |+0.1527| —21.2 |0.1887 |0.3595 0.1708] —47.5 
BBB easy sy 0.5791 | 0.7766 |—0.1975| —25.4 |0.1930 |o.3883 |—90.1953| —50.2 
SE ee 0.6577 | 0.8015 |—0.1438] —17.9 |0.2192 }o.4008 |—0.1816| —45.3 
319......] 0.6200 | 0.7817 |—0.1617]} —20.6 |0.2067 |o.3909 |—0.1842| —47.1 
4 leaves 
ac ng 0.6703 | 0.7786 |—0. 1083 13.9 |0.1676 jo. 3893 |—0.2217| —56.9 
B04) oC . 0.5904 | 0.6671 |—0.0677 10.1 |0.1499 |0.3336 |—0.1837) —55.0 
S00, 0.7066 | 0.8103 |—0.1037| —12.7 [0.1767 |o.4052 |—0. 2285) —56.3 
2905) 0% 0.6556 | 0.8142 |—0.1586] —19.4 [0.1639 |0.4071 |—0.2432| —59.7 
Bes co 0.7368 | 0.9028 0.1660 18.3 |0.1842 |o.4514 |—0.2672| —59.1 
Ly ee 0.7201 | 0.7783 |—0.0582] — 7.4 }o.18 .3892 |—0. 20902} —53.7 
2 a 0.7375 | 0.7529 |—0.0154 2.0 |0.1844 |o.3765 |—0.1921] —51.0 
5 leaves 
LF eo 0.6371 | 0.7639 |—0.0998 13.5 |0.1274 |0.3685 |—0.2411| —65.4 
BOR yc, 0.6409 | 0.6987 0.0578] — 8.2 |0.1282 jo. 3494 |—0.2212| —63.3 
ty ee ae 0.7334 | 0.7867 |—0.0533] — 6.7 {0.1467 |o.3034 |—0.2467| —62.7 
GOO Oe sk 0.8032 | 0.8366 |—0.0334 3.9 |0.1606 jo.4183 |—0.2577| —61.6 
AI ee, 0.7125 | 0.7987 |—0.0862 10.7 |0.1425 |0.3994 |—0.2569| —64.3 
6 leaves : 
Bec. 0.7123 | 0.7268 |—o0.0145| — 1.9 |0.1187 |0.3634 |—0. 244 67.3 
ao a Ss 0.7351 | 0.7646 |—0.0295| — 3.8 |0.1225 |o.3823 |—0.2598| —67.9 
oo eee ©.7950 | 0.8248 |—0.0298] — 3.6 |0.1325 |o.4124 |—0.2799| —67.8 
7 leaves 
Cy peers 0.7312 | 0.7785 |—0.0473| — 6.0 |o.1045 [0.3893 |—0. 2848) —73.1 
Epicotyl 
4a S., 1.4388 | 2.0369 |—0.5981] —20.4 | ------efe cree efor reer fe ere eeee 
ee I.§442 | 1.9333 |—0.3691| —190.3 | .-.--- efor ere espe eee eee tde rete es 
BAG cae: 1.5448 | 2.0396 |—0.4948] —24.3 |... .eeefeee eee efe eset ee cfe re eees 
S80. is 1.6325 | £.9028 |—0.2703] —14.2 |. wee eee fe ese eeefe cere netfee cece 
CS are 1.0634 | 1.1512 |—0.0878 Pf One FeO re eee 
PLANTS UNCLASSIFIED WITH RESPECT TO NUMBER OF PRIMORDIAL 
LEAVES.—In preliminary work (samples 226-229) the total weight 
of primordial leaf tissue in the abnormal seedlings is compared 
