ETHER, CHLOROFORM, ETHYL BROMIDE 



77 



EXPERIMENT IV. 



Ether, Chloroform, Ethyl Bromide. (Dog 1 : Respiration, 

 Blood-pressure, Cervical Vagi, and Sympathetics.) 



1. (a] Read the following directions over very careful ly 

 at least once before starting the experiment. It is exceed- 

 ingly important that yon learn the proper technic for the 

 following procedures correctly at the start. Arrange the 

 table for the experiment as shown in Fig. 117. 



Anesthetization of the Animal. (a) Treat the dog- 

 gently and kindly and do not irritate or frighten it. Two 



Fig. 71. Method of etherizing a dog. The animal should not be frightened or 

 hurt. (For description see text.) 



(or three) students should apply the anesthetic. The ani- 

 mal is caught by the head and legs and gently placed on 

 its left side (wliy left?}. If the animal is vicious it should 

 "be muzzled at the start. The anesthetizer seizes the head 

 gently but firmly and lays it down on a towel which has 

 already been placed flat on the floor (Fig. 71). The head 

 is held by the right hand and the ends of the towel are 



