144 Diseases of the HOdt. 



less from the effects of the effete matters being 

 penned up in the system, and therefore valuable 

 sows and boars should have their skins thoroughly 

 cleaned occasionally, thus preventing disease and 

 keeping off vermin. 



CANKER OF THE NOSE AND FACE (SORE NOSE.) 



This is a form of skin disease which usually 

 affects the nose first and by degrees spreads up the 

 face and sometimes over the ears and in patches 

 on the body. 



Causes: It is the result of a parasite which re- 

 sembles that of mange, but seems to have poison- 

 ous properties. As it spreads the part becomes of 

 a cankerous nature, causing constitutional symp- 

 toms and death. It is not as yet known where this 

 parasite originates, as I have found it affecting 

 pigs where the sanitary conditions were good. I 

 have made a number of experiments to find the 

 origin of the parasite, but have found nothing sat- 

 isfactory. 



Symptoms : The first thing noticed is a contrac- 

 tion of the skin which wrinkles, giving the nose a 

 short, stubby appearance. The animal rubs its 

 nose on the earth, snuffles and runs as if it wanted 

 to get away from something. By degrees it breaks 

 out in sores, which may extend up to the eyes and 

 ears and in some cases form hard patches on the 

 belly. I have seen cases of long standing where 

 the parasite buried deep into the muscles of the 

 face so that a slough would take place clean to the 

 bone of the jaw, leaving cankerous edges to the 



