DIFFERENCES BETWEEN ANESTHETICS. 4I 



action ; side to side movements of the lower jaw and voluntary 

 retraction of the tongue ; moaning or yelping ; and movements 

 of the head, ears, or limbs. 



When breathing has recommenced artificial respiration should 

 be carefully continued until the patient is well out of danger, or, 

 if this precaution is not followed out, the breathing may again 

 cease and death ensue. 



When an animal is recovering plenty of time should be 

 allowed to elapse before fluid restoratives or foods are ad- 

 ministered forcibly by the mouth, as there is danger of some 

 of the material getting into the trachea and causing choking or 

 pneumonia ; care must also be taken, particularly when dealing 

 with the cat, to avoid being bitten, as sometimes an animal 

 when recovering will involuntarily make a vicious bite at any 

 object near its mouth, and not unclose the teeth until forcibly 

 made to do so. 



Bad omens are to be gathered from relaxation, during the 

 stage of danger, of the sphincters of the bladder and rectum ; 

 erection of the hairs of the coat, especially well marked in the 

 cat ; stoppage of the heart, and no sign of returning animation 

 after five minutes' continuous and careful attempt at resuscita- 

 tion. Hope should not be given up for at least ten minutes 

 after respiration has ceased, and above all never so long as the 

 heart is beating. In several instances we have observed from 

 two and a half to four minutes to elapse before there was any 

 sign of a return to life. 



In case of a fatal termination, a post-mortem examination 

 should always be made where possible, as this often gives a 

 satisfactory explanation of the cause of death. 



Differences between the Administration of Chloroform, 

 Ether, and A.C.E Mixture.— When desirous of using ether, 

 either by the open method or with the aid of an inhaler, air 

 must be excluded to a very much larger extent than when 

 chloroform is chosen. 



The mixed vapour should consist of fully 70 per cent, of 

 ether, whereas with chloroform the proportion admitted even 



