PHYSIOLOGICAL ACTION OF VENOM OF BLACK SNAKE. 231 
In this experiment the respiration was well maintained for two 
hours forty-two minutes, when asphyxial convulsions occurred, 
due to the feeble circulation. 
Experiment 22—Rabbit, weight 1°75 kilos.; ether during 
operation. 
Time, Blood ces clepaneeart 
pressure amplitnc de rate per Remarks, 
hrs. mins. secs. eure 
Normal 107 13 72 ‘000005 gramme per kilo. in- 
jected into jugular vein 
0:58 0 96 1l 60 
071830 84 ud 69 
0 48 O 80 10 52 
jee at) 82 9 4:4, 
| Mae) enae 0 72 10 36 
a 380 80 ll 40 5 grm. per a lepapiaie 
1 40 0 55 1l 4d nice slow cme 
a4 6 23 50 67 convulsi 
1 41 10 58 65 val 
1 41 30 20 12 52 
1 12 2 
1 48 20| 11 55 4 
eee 6 | | heel 
In this experiment the respiration showed signs of failure, but 
the asphyxial convulsions must be attributed to the simultaneous 
enfeeblement of the circulation. 
Tn the next two experiments the venom solution was raised to 
the temperature of 85° C. for a moment previous to injection. 
} 
5 a 23—Rabbit, weight 1-4 kilos.; ether during 
Operation 
Time. —_| Blood pressure! 
; in mm. of ; 
Ars. mins. secs, iiercusy. 4 —— 
eh) he i ie pe ee 
Mormal 106 pieetice of -0035 ome per kilo. into 
0 19 os rnal jugular vein 
aa 74. 
er oe) 68 
ak? 78 
—? 104 
30.0 112 
pO 105 
. 90 102 
20 | 106 _| killed by bleeding. 
