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upon Respiration and Assimilation. 
following the addition of the chloroform the production dropped quickly 
to less than half its normal value and did not rise again appreciably, 
though possibly the last reading may be looked upon as a very slight 
recovery from the chloroform effect and the curve scheduled as intermediate 
between C and D. 
Experiment IV. Chloroform dose, i-oc.c. Procedure similar : i-ooc.c. 
of chloroform caused a similar outburst of C 0 2 , which is shown in Fig. 4. 
The normal output of C 0 2 was 0-0036 grm.; upon the addition of i-oo c.c. 
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of chloroform this rose to 0-0048 grm., then fell in the next reading to 
one-third of its original value. After this the fall of C 0 2 -output continued 
at a slower rate, tending to reach a small, level or slightly falling value 
without any sign of recovery. This is called type D. 
Experiment V. Chloroform dose , 2-0 c.c. Fig. 5 shows the effect of 
a further increase in the dose of chloroform; the outburst of C 0 2 is now 
very brief, but is made clear when, instead of two-hour, one-hour readings 
are taken as they are in this experiment. The C 0 2 -production falls off very 
rapidly after the introduction of such a dose of chloroform. This curve 
may be regarded as intermediate between D and the next type, E. 
