522 
AMERICAN JOURNAL OF BOTANY 
[Vol. 8, 
vations of other workers as to the relations of host and parasite in certain 
cases. 
Table 4. Relation of the weights of the leaf, root, and crown gall of the Giant Mangel 
Wurzel to the weight of the entire plant when grown under favorable conditions 
Normal 
Roots Inoculated August 5, Harvested 
October 9, 1920 
No. 
Total 
Root 
Leaf 
Total 
vvitnout 
oau 
Gall 
Root 
Leaf 
67- 10 
. 32.00 
35-10 
143.90 
63-30 
34.60 
123.40 
00.10 
55-30 
50.30 
33-70 
28.70 
3 
117.40 
41.40 
76.00 
51.10 
39-90 
10.00 
4 
102.80 
3740 
65.40 
45-70 
21.30 
14.20 
5 
20.50 
4. 10 
24.40 
199.60 
1 29.60 
83.30 
6 
70.00 
14.30 
62.30 
250.80 
170.30 
80.20 
7 
131.00 
58.70 
72.30 
210.20 
140. 10 
92.00 
81.05 
55.60 
25-45 
135-90 
96.80 
42.90 
9 
230.60 
101.90 
128.70 
193.60 
118.50 
63.60 
1 14.40 
38.50 
75-90 
51.10 
36.40 
21.10 
121.00 
56.90 
64.10 
176.10 
133.00 
60.00 
226.30 
144.50 
81.80 
163.70 
76.60 
37. 80 
13 
174-50 
95-75 
78.75 
42.30 
24.70 
T <-r Q/~v 
17.00 
14 
75.00 
35.50 
39-50 
T T T Qr\ 
III .oO 
00.00 
22.20 
15 
77.10 
36.20 
40.90 
70. oO 
58.20 
41.80 
82.40 
32.30 
50.10 
05.00 
61.05 
39.10 
17 
100.00 
32.50 
69.60 
61.40 
36.20 
23.30 
T Q 
58.90 
40.00 
26.00 
19 
50.60 
38.90 
19.55 
86.40 
38.70 
22.70 
21 
107.70 
146.05 
00.05 
22 
OD.7O 
78.40 
32.70 
23 
30.70 
24.50 
14.15 
24 
38.20 
37-70 
16.10 
25 
125.80 
115.70 
40.00 
20 
190.00 
116.35 
73-55 
27 
410.00 
264.60 
106.40 
28 
31-05 
25.80 
15.20 
29 
I I 1.40 
61.00 
30.00 
30 
152.90 
109.00 
43-50 
31 
164.00 
115. 10 
62 . 1 0 
32 
121.30 
89.20 
51.00 
33 
199.40 
115.90 
67.90 
34 
83-35 
57.10 
28.00 
35 
25.00 
22.50 
14.40 
36 
110.60 
73.00 
44-30 
37 
120.50 
79.70 
28.00 
38 
32.40 
24.00 
13.00 
39 
75-40 
39.50 
27.80 
40 
209.40 
142.30 
47.00 
41 
104.60 
65.20 
26.80 
42 
57-40 
34.70 
27.00 
43 
28.80 
30.50 
13.60 
44 
178.00 
84.00 
65.50 
45 
74.40 
53.70 
20.30 
46 
25.60 
13.20 
2.80 
47 
243.40 
173.40 
10.50 
48 
211.50 
186.00 
122.00 
49 
276.50 
258.10 
83.10 
50 
154-50 
135.30 
43.85 
51 
161.00 
105.00 
55.00 
52 
200.90 
137.70 
97.05 
