CHAPTER XI. 



Diseases of the Respifatory Organs. 



These include all diseases of the lungs, bronchial tubes, 

 larynx, nostrils, etc., and while they occur less frequently and are 

 not so numerous as those of the digestive system, yet they will 

 be found occurring both in the milder forms of influenza and 

 catarrh and the severer forms of inflammation of the lungs, or 

 their serous coverings in the form of pleurisy, or attacking the 

 bronchial tubes, as in bronchitis. In fact it is asserted that 

 pleurisy is a common affliction of sheep, numerous cases of the 

 same having been recorded following shearing and dipping, etc. 

 Sheep shorn early in the season are very liable to pleurisy, and 

 fatal terminations are not uncommon. 



Nasal Catarrh. 



ISTasal Catarrh, commonly termed "snuifles," very frequent- 

 ly affects sheep which have been exposed to stormy weather, 

 especially in the winter season. Sheep which have been shipped 

 a long way to market frequently arrive at their destination with 

 a severe attack of snuffles. JSTasal catarrh is an inflammation of 

 the lining membrane of the nose, and may exist in either of the 

 three forms of inflammation, viz: acute, sub-acute or chronic. 



Symptoms. 



In the acute form considerable fever will be present, de- 

 noted by rapid breathing, a high color of the visible mucous mem- 

 branes. The head is held out straight, the appetite is afiected 

 to a certain extent and there seems to be a tendency for the in- 

 flammation to pass downwards to the lungs. A cough is gener- 



