224 



Transactions of the Canadian Institute. [Vol. VII. 



pressure and respiration were noted at frequent 

 intervals as given below : 



Pulse. Respira- Blood 



tion. Pressure. 



Just before administration . . 105 24 i25mms. 

 Two minutes after admin- 

 istration 1 56 3g 1 25 mms. 



Two minutes later 228 29 140 mms. 



Two minutes later 168 24 140 mms. 



Two minutes later 174 27 140 mms. 



Four minutes later 160 18 



Four minutes later iii 12 



Four minutes later... 44 10 



(Tracing assuming an 

 asphyxial type with 

 great amplitude of 

 a. pulse waves.) 



". Four minutes later 34 5 



\ Two minutes later 88 7 Pressure now 



K commencing 



r- to fall 



4 steadily. 

 Z Two minutes later 118 2 



^ Tracing 41 shows the last stage of this 



\ case. The last respiration occurred at 14, the 



c pressure fell steadih', and the pulse became 



I fast at the last. 



5 Another dog was treated in the same manner, 

 \ and the next tracings show the effects at inter- 

 vals. The animal weighed about ten pounds 



.5 and was given 10 minims of dilute H.C.N. 



1 h\'podermically, following on 4 minims a few 

 ~ minutes before. He had had no morphia. Just 

 ^ before the last dose was given the pulse was 

 ^ 82, the respiration 16, and the pressure good. 

 ;£ (He had quite recovered from the first small 

 Si dose.) 



5 Pulse. Respira- Blood 



J^ tion. Pressure. 



2 Two minutes after 



^ last administration 160 26 In statu quo. 



•o Two minutes later.. 50 7 In statu quo. 



T Three minutes later 



-■ (tracing 42) 42 7 In statu quo. 



X Three minutes later. 100 Just stopped Falling steadily. 



z Six minutes later .. .Tracing 43 shows the termination 



< of this experiment. The heart 



^ stopped after beating rapidly to 



the end. 



