1096 Irving.—The Effect of Chloroform 
the leaf was removed from the chamber it was of a dark chocolate colour with 
drops of exuded moisture on its lower surface, and smelt strongly of HCN. 
The curve of this experiment is rather irregular and slow in its 
response, but is of the same type as that of the previous one. 
Fig. 21. 
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Fig. 22. 
Experiment XX. Concentration of chloroform — o -2 c.c. per litre of 
air-current. A further increased concentration of chloroform vapour in the 
entering stream of air produced still more accentuated outbursts of C 0 2 
both in light and in dark ; and these fell off rapidly to zero. Fig. 22 shows 
