DISEASES OF THE EESPIKATOKY OEGANS. 161 



ally present, caused by the accumulation of mucus from the 

 inflamed surfaces. In the first stage the sheep sneezes fre- 

 quently, sh-aking its head, evincing pain, and in the course of 

 a few hours a mucus discharge from the nostrils commences. 

 The mucus discharge soon becomes thick, but is odorless. After 

 a few days pus is formed and emitted with the discharge, which 

 in consequence becomes thicker and yellow, with a heavy specific 

 gravity, — sinking in water. This disease will often, if not 

 treated, continue in this state for several weeks, till nature effects 

 a cure, or it may be followed by an extension of the inflammation 

 to the lung tissue, causing pneumonia or bronchitis, which are 

 very liable to prove fatal. 



Creatment. 



The removal of affected sheep from exposed places and ad- 

 ininistration of tonics and stimulants will in the majority of cases 

 effect a speedy cure. Give one teaspoonful of sweet spirits of 

 nitre three times daily in a little water, or Dunn's tonic drench, 

 made as follows: 



Gruel 1 pint 



Tincture of iron 2 drachms 



Tincture of ginger i ounce 



Fluid extract gentian | ounce 



Mix and divide into three doses; give one dose daily. 



Another excellent tonic is Elixir calisaya bark, iron and 

 strychnine, dose one teaspoonful four times daily in a little water. 



On account of this disease affecting a number of a flock 

 simultaneously, it has been held to be contagious. This, how- 

 ever, is erroneous, the multiplicity of cases being due to all of 

 the sheep having been exposed to the same errors of hygiene 

 contemporaneously. 



Catarrh causes a weakening and prostration of the affected 

 sheep, which is very hard to overcome, making them unprofitable 



