200 C. J. MARTIN. 
Experiment IV. 
Z Vols. at 0° and 760 mm. 
Weight Quantity of in 100 vols. of blood 
of Condition. venom fem vein. 
animal. injected 
Kilos. | Before injection ...| (0001 gramme 40°23 
65 
40 minutes after sue aa 41°24 
piration and circu- 
lation fairly good. 
aaa 
1 hour after injection tension of CO, in femoral vein A =6°35 | oor. 
70 minutes, * #8 B =5'30 
Experiment V. 
Vols. at 0° and 760 mm, 
Weight Quantity of | °in 100 vols. of blood 
of Condition. ! Mana from carotid artery. 
animal, injected. CO; Os 
Kilos. | Before injection ...| (005 gramme | 39°50 
145 
20 minutes after injec- sis 43°42 
tion, respiration and : 
circulation failing. 
2 honrs 20 minutes after es 44°87 
injection, respiration 
very shallow and blood 
pressure low. 
apm are > 2 eae 
1 hour after injection tension of CO, in femoral artery = 7 42") . 
Ba vein = 8:58 i e 
artery = 6°65"/ Ps 
33 Bo ” ”> ed 
1 hour 30 minutes 
© Darine chi oye cL a we maintained. The 
g this last determination artificial respiration was 
were well inflated with warmed air 15 times per minute. 
” ” > 
In this experiment the aérotonometer tubes contained al 
the commencement. . 
With the exception of Experiment I. the absolute quantity 
CO, contained in the venous blood was not decreased. * 
contrary, the amount of CO, was, in those cases where the ES 
was severely affected by the venom injections, conside aoe 
excess of that found previously. Under the same circit” 
the tension of CO, was very much higher than has been ® 
for normal venous blood. In most of the experiments the ; 
representing both the absolute amount and the tension he a 
rose together as the condition of the animal became yee 
worse. After peptone injections, whilst the tension of | me 
