Experiment 1.—Dog, male, 11 kilos. Skilful etherization. Full anes- 
thesia by open method. Equilibrating air 5.6 per cent CO2. 
Blood COs. 
Time. Condition. Reseed 
Content. Capacity. 
vol. per cent vol. per cent 
8.30 a.m. | Normal. 21 51 50 
$005 B64 Ether. 
9:30. “ 47 43 50 
10.00 “‘ 48 43 45 
10.30 “ 26 46 46 
LEGO...” 30 51 48 
Lous 17 47 47 
POO 19 44 47 
12:20 *° Shallow respirations. 29 56 48 
1.00 p.m. | Less ether. BA 46 45 
jack's 14 48 44 
ee was 19 50 44 
20 29 44 46 
00! ye: 25 41 45 
3.05 “ Experiment stopped. Dog in good condition. 
In thé second experiment the initiation of anesthesia was pur- 
posely made unskilfully slow. The dog was allowed to struggle 
in the stage of excitement for a considerable time, and when this 
period came to an end the ether was given irregularly so that at 
no time was there deep anesthesia. 
Experiment 2.—Dog, female, 8 kilos. Etherization, open method, ex- 
cessive respiration. Equilibrating air 5.5 per cent COQOp. 
Blood CO:. 
Time. Condition. eee Se 
Content. Capacity. 
p.m. vol. per cent vol. per cent 
4.00 18 47 49 
4,24 Kther started. 
4.26 44 
4.28 68 
4.30 74 
4.33 90 
4.35 ; 38 48 
5.00 62 
9.10 39 44 
5.30 34 
6.10 40 43 
6.30 46 
7.10 38 4] 
347 
