under the Influence of Injuries. 
517 
Table III. 
Growth of shoot after root was injured. 
, • j ( a . — 10 mm. removed from root-tip. 
Helianthm. root removed. 
( c. — Control. 
Temperature, 22 0 (constant). 
Series. 
Average 
original 
length of 
root of 
nine 
seedlings. 
Average 
original 
length of 
shoot 
of nine 
seedlings. 
Average 
normal 
rate of 
growth 
of shoot. 
Average 
growth 
of shoot, 
1st period 
after 
injury. 
Average 
growth 
of shoot, 
2nd period 
# after 
inj ury. 
Average 
growth 
of shoot, 
3rd period 
after 
injury. 
Average 
total 
growth 
of shoot 
after 
injury. 
P. 
24 hrs. 
24 hrs. 
48 hrs. 
144 hrs. 
2 1 6 hrs. 
T 
a. 
66 mm. 
22 mm. 
10 mm. 
17 mm. 
65 mm. 
92 mm. 
174 mm. 
1. 
b. 
64 „ 
21 jj 
10 » 
13 „ 
35 ,1 
4 * » 
89 „ 
c. 
62 „ 
22 „ 
9 „ 
20 „ 
5 ° » 
60 „ 
130 „ 
Table IV. 
Growth of root and shoot after root-tip was slightly injured. 
Series I. [ a . — 1 mm. (as nearly as possible) removed from root-tip. 
Vicia Faba. ( b. — Control. 
Temperature, 22 0 (constant). 
Series. J 
Average 
original 
length 
of root 
of ten 
seedlings. 
Average 
original 
length 
of shoot 
of ten 
seedlings. 
Average 
normal 
rate of 
growth 
of root. 
Average 
growth 
of root, 
1st period 
after 
injury. 
Average 
growth 
of root, 
2nd period 
e after 
injury. 
Average 
growth 
of root, 
3rd period 
after 
injury. 
Average 
total 
growth 
of root 
after 
injury. 
Average 
total 
growth 
of shoot 
after 
injury. 
P. 
24 hrs. 
24 hrs. 
48 hrs. 
144 hrs. 
2l6 hrs. 
216 hrs. 
I. 
a. 
20 mm. 
3 mm. 
15 mm. 
18 mm. 
22 mm. 
41 mm. 
81 mm. 
53 mm ° 
b. 
19 » 
3 ,, 
18 „ 
3 2 » 
00 
128 „ 
3 3 „ 
