264 



DR JAMES A. GUNN ON 



An important point, illustrated by this experiment and confirmed by all of a large 

 number of blood-pressure experiments in rabbits and cats, is the complete absence of 





Fig. 12. 



convulsions in a properly anaesthetised animal. This was the only one of these 

 experiments in which convulsions were ever observed ; they lasted for about one 



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Fig. 13. 



Fig. 14. 



minute (see fig. 13), and were due to insufficient depth of anaesthesia. Tappeiner, in 

 his two experiments on blood pressure, observed convulsions during practically the 

 whole time of these experiments. Unfortunately he does not state what anaesthetic, 

 if any, he used. This occurrence of convulsions vitiated the value of his experiments 



