1921] HARRIS—PHASEOLUS 157 
each. The results are shown in table I for green weight, table II 
for dry weight, and in table III for the percentage of dry matter in 
the primordial leaves. The data show that in the case of both 
green and dry weight tissue production is invariably higher in the 
TABLE II 
MEAN DRY WEIGHT PER PLANT AND PER LEAF IN SEEDLINGS OF A TETRACOTYLEDONOUS 
CE AND IN NORMAL PLANTS OF THE ANCESTRAL RACE 
VALUES PER PLANT VALUES PER LEAF 
SAMPLE ; 
Abnormal} Control | Difference amend Abnormal Control Difference oo 
Unclassified 
Cs ae ere 0529 | 0.0600 |—0.0071] —11.8 |0.0130 |o.0300 |—o0.0170) —56.6 
oe eg ee 0.0530 | 0.0604 |—0.007 12.2 |0.0128 |o.0302 |—o.o01r74| —57.6 
2808 0.0528 | o. —o0.0116] —18.0 |0.0129 Jo.0322 |—0.0193} —590.9 
re Ts en 0.0539 | 0.0548 |— — 1.6 10.0138 |0.0274 |—0.0136| —49.6 
2 leaves 
71 ete ee 0.0355 | 0.0587 |—0.0232| —39.5 |0.0178 |o.0294 |—0.0116] —39.4° 
O50 foas 0.0403 | 0.0542 |—0.0139| —25.6 |0.0202 |o.0271 0.0069] —25.4 
3 leaves 
OA AE 0.0492 | 0.0649 |—0.0157| —24.1 |0.0164 |o.0325 |—0.0161] —49.5 
79 Ens 0.0427 | 0.0562 |—0.0135| —24.0 |0.0142 |o.0281 |—0.0139] —49.4 
se Re 0.0404 | 0.0565 |—o.0161| —28.4 {0.0135 |o.0283 |—o.0148} —52.2 
BOS es 0.0404 | 0.0539 |—0.0135| —25.0 |0.0135 |0.0270 |—0.0135] —50.0 
ade clog fe 0.0360 | 0.0488 |—0.0128} —26.2 [0.0120 |o.0244 |—0.0124] —50.8 
4 leaves 
1 Gsl graae 0.0517 | 0.0641 |—0.0124] —19.3 [0.0129 |o.0321 0.0192} —59.8 
204.205). 0.0470 | 0.053 0.0062} —11.6 {0.0118 |0o.0266 |—0.0148} —55.6 
2060 oe) 0.0493 | 0.0576 |—0.0083] —14.4 |0.0123 |o.0288 |—0.0165| —57.2 
20000 2.) 0.0409 | 0.0540 |—0.0131| —24.2 |0.0102 |o.0270 |—0.0168) —62.2 
200 Scr. .0444 | 0.0568 |—0.0124] —21.8 |o.o1II |o.0284 |—0.0173| —60.9 
KO Oe 0444 | 0.0516 |—0.0072} —13.9 |0.o011r |o.0258 |—0.0147} —56.9 
$20 80. 0.0434 | 0.0478 |—0.00 Q.2 |0.0109 |o.0239 |—0.0130] —54.3 
5 leaves 
p18, ieee 0.0488 | 0.0604 |—o0.0116] —19.2 |0.0098 |o.0302 0.0204 67.5 
B08 6 0.0462 | 0.0537 |—0.0075| —13.9 |0.0092 |o.0269 |—0.0177| —65.7 
roe AE 0.0501 | 0.0562 |—0.0061] —10.8 |0.0100 |o.0281 |—o.0181| —64.4 
SOG ys 0.0496 | 0.0549 |—0.0053 9.6 |0.0099 Jo.0275 |—0.0176] —64.0 
eg See 0.0423 | 0.0500 |—0.0077/ —15.4 |0.0085 |o.0250 |—0.0165) —66.0 
6 leaves 
250.2 s.. 0.0528 | 0.0558 |—0.0030] — §.3 |0.0088 |o.0279 |—0.o191| —68.4 
ee 0520 | 0.0555 |—0.0035| — 6.3 |0.0087 |o.0277 |—9.0190| —68.5 
Ce eee 0.0496 0565 0069] —12.2 |0.0083 |o.0283 |—0.0200] —70.6 
7 leaves 
a59..5... 0.0557 | 0.0614 |—0.0057| — 9.2 |0.0080 |0.0307 |—9.0227| —73.9 
Epicotyl 
cP. eae O:1048 | 0.1507 [0.0450]... 2. oe | ects ee epee ee tbe see tteerete es 
M40 caus O.4580 10.3443 (0. C204 5 pe ee ee ee ee Eee eee eee 
ae a ne O.1027 | O, F554 (0.0587). oP finns ee afl so ew py wees ss 
250.500, OAs 16. Yare 1-8 00901 eo a is eer ee ce ds eee 
ot Canes G.0030 | GO 1045" 10.0100) 6c. oe he ce bea vk es cients tes 
