78 EXPERIMENTAL PHARMACOLOGY 



brought up separately and wrapped about the head. The 

 right hand then carefully seizes the towel and holds it 

 tightly around the neck of the dog. The towel thus forms 

 a kind of sack or tube around the dog's head. The distal 

 end of this sack is now seized with the anesthetizer's left 

 hand and twisted around two or three times and then placed 

 flat on the floor where it is held down firmly with the anes- 



/ 



thetizer's left foot. Both the anesthetizer and the assist- 

 ant should stand behind the dog. (Why?) The assistant 

 reaches forward over the animal and holds both fore feet 

 in the left hand and the hind feet in the right hand. To 

 prevent the dog from getting up the anesthetizer holds its 

 head firmly down to the floor with his right hand and the 

 assistant places one (or both) knees on its body. If the 

 dog is muzzled, two students can thus control almost any 

 dog with but little trouble. (In practice one seldom muz- 

 zles the dog.) 



Caution. There should always lie kept in plain view and in easy reach 

 in the laboratory a bottle of carbolic acid solution and a bottle of alcohol. 

 These should be kept together and a toothpick with a little cotton wrapped 

 around one end should be stuck in the cork of the carbolic acid bottle. One 

 never knows when a student may lie bitten by a dog, and as all dogs or cats 

 are subject to rabies, airy wound made by the animal 's teeth or claws should 

 be cauterized with carbolic acid immediately. This is done by wetting the 

 cotton on the toothpick with the acid and applying it to the wound. In a 

 few seconds the acid will penetrate the tissues as deeply as the virus has 

 probably gone and then the acid should be carefully washed off with the alco- 

 hol. This dissolves out the acid and removes it. The acid may cause the 

 tissues to take on a whitish, cooked appearance, but the alcohol often removes 

 this entirely. Do not "kill the animal if the wound appears at all dangerous. 

 Save it carefully for diagnostic purposes. Consult a first-class bacteriologist 

 or the city health department. 



As shown in Fig. 71 the anesthetizer now drops some 

 ether on the towel in front of the animal's nose. The dog 

 will struggle some and should be held firmly. With suf- 

 ficient ether the animal should be anesthetized in about 

 two minutes. Be sure the dog gets sufficient air through 

 the towel. Watcli the respiration closely. The animal will 



