582 Richards . — Respiration of Wounded Plants . 
I. Respiration-curve ot Potato, cut, and allowed to run its normal course. See 
Experiment 1. II. Same, but cut surfaces covered with clay which was removed 
during the fifth day. See Experiment 7. III. Normal curve of injured Carrot. 
See Experiment 15. IV. Curve showing result of covering cut surfaces with clay 
as in II. See Experiment 17. V. Normal curve of injured seedlings {Vida Faba). 
See Experiment 24. VI. Normal curve of injured leaf {Veronica spedosa). See 
Experiment 30. On the horizontal the days are numbered, beginning from time of 
injury. Before Zero is given the respiration in the uninjured condition. On the 
perpendicular the number of mg. C 0 2 per hour are given. 
