HARRIS: INTERRELATIONSHIP IN PHASEOLUS iis 
Having shown that the abnormal plants produce both a smaller 
green weight and a smaller dry weight in both the primordial and in 
the first compound leaves, the problem of the relative quantities of 
water and dry materials in the leaves of the two types of plants 
naturally presents itself for consideration. 
The results have been expressed in terms of the percentage of dry 
substance in the leaves, 7. e. (dry weight X 100)/green weight. The 
constants appear in Table ITI. 
TABLE III 
Percent of Dry Matter in Primordial Leaves and in First Compound Leaf 
| Primordial Leaves | : First Compound Leaf 
Sample | 
Abnormal Control | Difference Abnormal | Control | Difference 
| | 
32 7.374 7-507 | = 193 | 8.612 8.703 — .09I 
35 | 6.480 ose, = ols7/ | 8.541 8.564 — .023 
36 7.091 7.184 | — .093 | 8.025 7.978 + .047 
39 e278 7.439 — .I61 8.333 8.469 — .136 
40 7.185 7.246 — .061 8.013 8.080 | — .067 
41 | erator 720 OOS 8.324 8.045, || 1 = e279 
2 7.076 || (8.207 0) —iI3gr | ; 83198 7.204 924 
43 6.894 | 7.085 — .I91 | 7.807 8.062 ie 2 55 
46, | 6.850 6:907. *| ~“—..147 | 8.611 8.174 + .437 
47 | 6.262 | 6.386 — L24P ie 7567, 7O12) | — 2345 
48 | 6.574 6.381 + .193 | 7.938 832107 Fi) 9.272 
49 645599) '0:533) Je t= -078— |) 8.004 — | 8.067 — .063 
53 6.757 6.845 — .088 | 8.884 | 8.629 + .255 
54 6.713 | 6815 | — .102 | 8286 | 9.061 | — .775 
56 6.487. | 8.293 —1.806 8.287. | 8.502 — .215 
61 6.855 6.899 —— OA A: 8.620 | 8.668 | — .048 
64 6.048 62108 e103 7.528 | 7.438 + .0g0 
65 62127) 15.969)" |) 7.303 7.815 | 6.962 | + .853 
66 6.014 | 5.817 |) 4.197 1) “72263 ||) =7:366"1 |) 7.104 
70 | 6.216 6.581 | — .365 | 8.490 | 8.764 | — .274 
aL | 4.948 | 5.001 =) 2053) | .0:032 | 6.595 | + .036 
72 | 4.906 6:035 | —I.I29 | 6.976 | 8.029 | —1.053 
73 5021 6.156 — .235 | 8.009 | 8349 | — .340 
The results are not so consistent as those for the absolute values, 
green weight and dry weight. This condition is to be expected for 
two reasons. First, the abnormal plants show lower values of both 
green weight and dry weight than the normal controls. One cannot, 
therefore, expect such large differences in the indices calculated from 
these constants as if both measures did not differ in the same direction 
between abnormal and control series. Second, two sets of technical 
operations are involved in the indices, only one in each of the con- 
stants used in calculating these ratios. While every effort to avoid 
error was made, the probabilities of error in an index are clearly 
twice as great as in either of the constants upon which it is based. 
