CANKER OF THE EAR. 311 



the air the lead is converted into carbonate of lead, or 

 into white paint, after a short exposure. Carbonate 

 of lead is not soluble in water. Therefore, always 

 employ a stoppered bottle, and never permit the 

 bottle to remain open longer than is absolutely ne- 

 cessary, for fear of the carbonate being precipitated. 



No disease yields more readily than canker in the 

 dog; but if left to run its course, it gives rise to other 

 annoyances. The flap of the ear from the perpetual 

 shaking of the head becomes unhealthy. A scurfiness 

 is first exhibited about the margin, and the inner side of 

 the flap. Should this be unattended to, sores next make 

 their appearance; or if the shaking of the head be 

 very energetic, a watery abscess forms upon the inner 

 side of the flap of the ear. These affections are al- 

 ways mitigated by attention being bestowed upon the 

 internal disorder. However, that will not in every 

 case succeed, therefore apply to the scurfy or to the 

 sore part a lotion composed of pure glycerine, one 

 ounce ; camphor, one drachm ; chloride of zinc, one 

 grain. Dissolve the camphor in the glycerine, and 

 add the chloride of zinc. 



When abscess is developed, at once slit it up its en- 

 tire length, and dress the wound with the solution of 

 chloride of zinc, one grain to the ounce. The injuries 

 to the flap require to be dressed only at such periods 

 as the internal ear is attended to. 



By such an easy, safe, and considerate process are 

 all the barbarities which were recently practised upon 

 the ears of unfortunate dogs superseded. The danger 

 which was once supposed connected with canker in the 

 ear, was created by the mistaken measures adopted 



