256 C. J. MARTIN. 
Experiment III.—continued. 
Distance |Amplitude of 
between | respiratory Remarks. 
coils. record, 
2 hours 0 minutes after | 42 cm. | 10 mm. | respiration slowed. — 
» 15 > 42 ” 7 2” 
”» 30 ” ” 4 ” 
” 45 2” 41 ;; 35 2 
3 hours 0 me 40 7 ee corneal reflex gone. ¥ 
15 fo rs Ee 0 blood pressure as high} 
as at beginning of 
experiment. a 
Spe Re a6 0 blood pressure falling.| _ 
aE 
Experiment IV. a 
ict “ ee agey e 
between | respiratory Remarks. 
coils. record. ; 
a 
Before injection... ...| 42'¢.m.| 16 mm. 
15 minutes after| 42 ,, | 19 ,, 
30 ” AD 2? . 
s iS blood pressure falling. | 
lhour 0 6 UE Dee aes ee ” ‘ 
tage a ae ee abdominal reflex gone) 
30 yy SOF: 5; 8 5 corneal reflex gome;| — 
pressure fallen to half.) 
2? 45 ” 30 ” 0 ay 
Tn all of these experiments, the strength of the stimulus requisite Ss 
to cause a contraction of the diaphragm, when applied to the : 
phrenic nerve, was slightly greater at the end of some hours. big 
difference was however, very slight, and it is noteworthy that! 
the only case where the circulatory efficiency was maintained, tae 
strength of stimulus required was the same as at the beginning 
of the experiment three and a half hours earlier, whereas ® 
spontaneous respiratory movement had ceased fifteen me 
before. One would expect to find that the mere fact of ee 
nerve on electrodes all this time would in itself have produced 
diminished sensitiveness to stimuli. The experiments : “ 
show conclusively that Pseudechis venom in no way affects ee 
transmission of impulses from nerve to muscle. | 
VI.—Errect or THE VENOM ON THE RESPIRATORY Mucnanis® e 
The effect of cobra poison on the respiration has ber 
investigated by Wall who has published some interesting * 
tethor - 
