2 6 SCIENCE PROGRESS 



(3) Dr. Levy's Apparatus. 



A suction apparatus with a most ingenious device to 

 overcome the objection mentioned above (Trans. Royal 

 Medical and Chirurgical Soc, 1905). 



(4) Dr. Waller's Wick Vaporiser. 



The percentage administered is in no way dependent 

 on patient's respirations {Journal of Physiology, vol. xxxi. 

 p. 6 of Proceedings). 



(5) The Author's Apparatus. 



The percentage administered is in no way dependent 

 on patient's respirations (Trans. Royal Medical and 

 Chirurgical Soc, 1905). 



III. Observation of the Patient's Condition 



There can be no doubt that this is by far and away the most 

 important duty of the anaesthetist. Whether we adopt the 

 " Scotch view " that the respirations alone should engage our 

 attention, or whether we follow the " London view " that the 

 pulse should be our guide, we cannot doubt for a moment the 

 duty of watchfulness. These pages are not the right place to 

 discuss the clinical aspects of the question. One can, however, 

 bring forward the opinion that where a reliable apparatus is 

 used the respirations should in the vast majority of cases afford 

 a safe guide as to the patient's condition. Unless the recent 

 researches on chloroform anaesthesia arc entirely misleading, the 

 administration of mixtures of low concentration should render cases 

 of sudden heart failure the rarest of accidents. 



If this should prove to be the case, as one has every right 

 to expect that it will, those who have been engaged in these 

 investigations will indeed reap an ample reward. 



