ABSORPTION OF IONS BY LIVING AND DEAD ROOTS 253 
TAB..E II 
Roots of Corn in Solution of CaCh 
Duration of 
Gram 
Ionic 
Gram Ionic 
Per 
Per 
ot 
Roots of White Field 
Cone, of Ca 
Cone, of CI. 
Cent 
Cent 
Corn 
in Days 
Ca Re- 
CI Re- 
At Start 
At End 
At Start 
At End 
moved 
moved 
I 
Alive 
15 
.0221 
.0192 
.0420 
.01823 
58.4 
56.6 
2 
Alive 
14 
.0226 
.0117 
.0429 
.0231 
48.2 
46. 1 
3 
Alive 
14 
.0226 
.0135 
.0429 
.02536 
40.3 
40.9 
4 
7 
.0226 
.0107 
.OzL2Q 
.0220 
52.6 
48.7 
5 
Alive 
7 
.0226 
.0079 
.0429 
.01693 
65.0 
60.5 
Average 
52.9 
50.56 
6 
Dead (killed by boil- 
ing then in CaCl2 
5 
.022 1 
•OI33 
.0420 
.0254 
39-8 
39.5 
7 
Dead (from lot i, in 
CaCl2 and forma- 
lin) 
4 
.022 1 
.OIoO 
.0420 
.03496 
15.8 
16.8 
8 
Dead (from lot 2, in 
CaCh and forma- 
lin) 
3 
.0226 
.0221 
.0429 
.04053 
2.2 
5-5 
9 
Dead (from lot 3, in 
CaLl2 and. lorma- 
3 
.0226 
.0186 
.0429 
.03313 
17.7 
22.8 
10 
Dead (in tap water; 
then in CaCl2 and 
3 
.0226 
.0175 
.0429 
.03386 
22.5 
2 1 . 1 
1 1 
Dead (in tap water; 
then in CaCU and 
3 
.0226 
.0182 
.0429 
195 
1 8. 1 
12 
Dead (from lot 4; in 
Cad2 and lormalm) 
2 
.0226 
.0429 
01026 
15.0 
8.5 
13 
Dead (from lot 5; in 
CaCl2 and formalin) 
2 
.0226 
.0210 
.0429 
.04003 
7-1 
6.7 
Roots of Sweet Corn 
Average 
1745 
17-37 
14 
Dead (in tap water; 
then in CaCU and 
5 
.0206 
.00597 
.039 
.0136 
71.0 
65.13 
15 
Dead (in tap water; 
then in CaCl2 and 
chloroform) 
5 
.0206 
.00606 
•039 
•0135 
70.56 
65.38 
16 
Dead (in tap water; 
then in CaCl2 and 
chloroform) 
5 
.0206 
.00784 
•039 
.0168 
61.66 
56.92 
17 
Dead (in tap water; 
then in CaCl2 and 
chloroform) 
5 
.0206 
.00918 
•039 
.0189 
55-41 
51-54 
Average 
64.66 
57.59 
in CaCl2. (The seeds were not allowed to come into contact with 
CaCU.) In some cases sufftcient chloroform or formalin was added to 
the CaCl2 to kill the roots and the results were then compared with those 
