Wounded Plants . 
C. 
Experiments to determine amount of C0 2 contained in 
living potatoes and carrots. Driven off by boiling water and 
determined in Pfeffer-Pettenkofer apparatus. 
With Potatoes. 
Weight objects. 
mg. C0 2 
Expt. A. 
3 potatoes 
66 grams 
36-0 
„ B. 
3 >> 
5 6 » 
32.0 
» c. 
5 
io 5 >> 
6 l -2 
„ D. 
3 „ 
60 „ 
27*8 
Average C 0 2 per gram 5-5 mg 
With Carrots ( Daucus Carota ). 
Expt. E. 
2 carrots 
102 grams 
38 .O 
„ F. 
1 » 
95 f) 
34*4 
„ G. 
2 „ 
101 „ 
46.8 
Average C 0 2 per gram 3*7 mg. 
