464 
Copeland and Kahlenberg. 
Table IV. 
Avena saliva. Dec. 8, 3 P. M. Conditions as in Table II. Not more 
than three roots on a seedling: the longest root — between 30 and 35 
mm. in length, — used for the measurements. 
GROWTH IN MM. 
Metal. 
Dec. 9. 
Dec. 10. 
Dec. 11. 
Dec. 
13. 
Dec. 15. 
Dec. 
19. 
Root. 
Shoot. 
Root. 
Shoot. 
Control. 
8 
17 
29 
47 
81 
61 
64 
120 
Au. 
12 
20 
31 
52 
82 
70 
73 
130 
Pt. 
11 
29 
37.5 
59 
95 — 
one pi a 
nt lost. 
Pd. 
12.5 
21.5 
29 
42 
77 
47.5 
48.5 
120 
Ag ... 
4 
6.5 
7.5 
10.5 
50 
11.5 
11.5 
52 
(ldead.) 
A1. 
6 
15.5 
15.7 
19.5 
70 
21.5 
21 
90 
Cu. 
1 
1 — 
Nearly 
white; 
after 
ward gr 
eenish. 
Ni. 
14.5 
27 
40.5 
67 
65 — 1 
plant 
lost. 
Co. 
3 
3 
Pale 
50 
80 
brown. 
Sn . .. 
14 
27.5 
38 
65 
82 
68 
69 
115 
Fe. 
3 
3.5 
4 
5 
73 
5 
95 
Cd . 
1.5 
1.5 
48 
85 
T1.. 
2.3 
2.0 
25 
Ph 
2.8 
4 
4 
30 
30 
Zn. 
1 
1 
65 
85 
Mg... 
1.5 
1.5 
Dis- 
65 
80 
col’red. 
Sb. 
4.5 
8 
9.7 
11.5 
55 
12 
12 
70 
Bi. 
11 
16 
18.5 
22 
41 
22.5 
22.5 
55 
S. 
17 
27.5 
38.5 
39 
95 
39.5 
39 
125 
C. 
J5 
26 
36 
55.5 
97 
68.5 
73 
135 
Hg. 
8.5 
16.5 
26 
49 
65 
63 
72 
120 
As 
1 
1 
20 
I 
1 
1 
37 
Ru. . 
10 
11.5 
14 
14.5 
40 
14.5 
80 
Mn . 
10 
17 
18 
19.7 
55 
20 
20 
80 
Rh. 
5.5 
10.5 
14 
37 
90 
46.3 
46.5 
110 
Cr. 
7 
10 
11.5 
13 
67 
13.3 
13.3 
100 
In. 
15 
30 
36.5 
41 
90 
41 
40.5 
120 
W 
5.5 
6.3 
6.3 
60 
45 
Te. 
15 
30 
38 
40 
70 
40 
100 
Se ... 
8 
15 
20 
35 
70 
62 
88 
110 
B. 
1 6 ' 5 
18 
22 
35 
90 
54 
62 
160 
