184 CANINE MEDICINE AND SURGERY 



severed with until normal breatljing is again estab- 

 lished. 



6. In case of sudden collapse, every effort must 

 be made to reestablish respiration. Remove the 

 chloroform mask at once, pull the tongue forward 

 with the tongue forceps, and drop on the back of 

 the tongue the requisite dose of Scheele's acid.* The 

 dose of the acid is one-eighth of a minim for each 

 pound in weight of the animal. The sudden gasping 

 which immediately takes place on the administering 

 of hydrocyanic acid in a large majority of cases 

 starts the respirations again. Then give the patient 

 a smell of strong ammonia and a hypodermic of 

 1-100 to 1-50 grain of strychnin, according to its size. 

 If these measures fail, give adrenalin solution (1-1000) 

 hypoderm'ically. In addition to this medicinal treat- 

 ment, artificial respiration must be resorted to. 



Technic. — The following apparatus, instruments, 

 and drugs are required to be ready to hand : Chloro- 

 form apparatus as illustrated, chloroform, strong 

 ammonia, Scheele's acid (one eighth minim to a 

 pound weight of patient), medicine dropper, hypo- 

 dermic syringe filled with strychnin solution (1-50 

 grain), adrenalin solution (1-1000), and tongue 

 forceps. 



Administration. — The patient should be secured in 

 the abdominal position on the table and the mask 

 applied over the nose and mouth. The anesthetist 

 then gently squeezes the bulb of' the apparatus, 

 taking care to give the patient plenty of time, after 

 the first struggles have subsided, and the patient 

 passes into the second or narcotic stage, recognized 

 by a series of short, sharp ye.lps or whining. Then 

 the chloroform may be pushed faster until the anes- 



*A five-per-cent aqueous solution of absolute hydrocyanic acid- 

 named for Carl Wilhelm Scheele (1742-1786), a Swedish chemist! 

 discoverer of chlorin and oxygen. 



