io8o 
Irving.—The Effect of Chloroform 
Experiment II. Chloroform dose , o-^cx. The procedure in this ex¬ 
periment was similar to that in Exp. I in all respects, save that double the 
amount of chloroform was added. The results are given in Fig. 2. Upon 
2 
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a 
a 
z 
o N 
o 
a 
O 
K- 
D 
CL 
H 
D 
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.HOURS O 2 4 6 8 IO 12 14 16 IS 20 
Fig. 2. 
comparison with the control (open circles for each reading) it is seen that 
the effect of this dose of chloroform is to produce a temporary outburst of 
C 0 2 , quickly followed by a depression below the normal, from which 
recovery takes place; after fourteen hours the C 0 2 -output is about normal. 
This type of curve will be called C (see Fig. 7). 
Experiment III Chloroform dose, o-5 cx. The procedure was the 
same, but an increased dose given at the second hour of the experiment. 
Fig. 3 shows the effect on the output of C 0 2 . After the outburst of C 0 2 
