Experiment 4.—Dog, male, 73 kilos. Gastric manipulation, followed 
by an attempt to treat low CO, capacity with CO:. Equilibrating air 5.5 
per cent CO». 
Condition. 
Time. 
10.00 a.m. Normal. 
10.05 ‘“ Morphine, 0.15 gm. 
10.45 “ 
15s Gastric manipulation 
started. 
11.00 “ 
LIS. * 
Bike es... 
11.45 “ 
pal eg 
12.257 °° Manipulation stopped. 
Moribund, no_ re- 
flexes. 
12:30) 5% Started CO». 
12.45 ** 
1.00 p.m. 
seg Bs 
ee eT Heart stopped. 
Experiment 5.—Dog, female, 7 kilos. 
librating air 5.5 per cent COs. 
Time. 
Condition. 
Normal. 
Morphine, 0.14 gm. 
Manipulation started. 
Reflexes weak. 
Manipulation stopped. 
CO, started. 
Heart stopped. 
Respira- 
tions 
per min. 
30 
p z 33 Blood Coz. | 3 3 
Pegi esol Gon lca | ES 
es E Ss fet, panty; ase 
A hg ens sd) vs 
22 46 49 
10 58 | 56 | 110 
64 155 
52 134 
58 120 
46 43 | 47 | 115 
54 30 33 7 
39 FORT a as 27 35 
20 Ta 0o|n ok. 26 32 
18 #2651) 3a 29 25 
21 7.6 34 30 30 
Similar to Experiment 4. Equi- - 
Blood CO:. 
CO: in air Arterial 
breathed. ‘ pressure. 
Content. | Capacity. 
per cent oe us t eas mm, 
per cen per cent 
50 49 
59 53 100 
130 
80 
39 42 
40 
34 37 40 
8.0 
9.1- 4] 36 50 
937 40 
10.3 46 38 59 
11.0 46 35 25 
369 
