120 Veterinary Medicine . 



-ducts may be opened, thus forming a salivary fistula. If from 

 -the retro- (supra-) pharyngeal glands, the rupture into the 

 pharynx is more likely to take place, but in some cases the in- 

 vesting sac, meeting with equal resistance in all directions, fails 

 to undergo degeneration and softening at any one particular point, 

 and the contents remain pent up indefinitely. If the liquid is 

 absorbed a cheesy or putty like mass may be the final outcome, 

 with chronic cough, some stertor in breathing and it may be 

 difficulty in swallowing. 



If the guttural pouches should be involved, there is deafness, 

 parotidean swelling, which may eventuate in a fluctuating swell- 

 ing at the lower border of the parotid, and a free discharge when 

 the head is lowered, which is likely to last after general recovery. 

 (See Guttural Pouches, pus in). 



lyaryngeal paralysis and roaring often follow laryngitis in 

 strangles. 



Pulmonary Symptoms in Strangles. Tracheitis and brojichitis 

 are forms of extension of strangles from the upper air passages 

 and pneumonia follows of virtual necessity. In many cases these 

 are primarily dependent on the descent into the lungs of the in- 

 fecting discharges, complicated in many cases by the inhalation 

 of food materials. There are the usual symptoms of broncho- 

 pneumonia complicating those of strangles and the percussion and 

 auscultation signs usually imply circumscribed areas of congestion 

 and consolidation with intervening areas of pervious lung. There 

 may be at such points the blowing or mucous r^les of bronchitis, 

 the sibilant sounds of emphysema, the crepitation of congestion 

 and the abnormal clearness of sounds carried from distant organs 

 through the consolidated lung. On percussion there may be the 

 non-resonance of the consolidated areas, and the excess of reson- 

 ance over emphysematous portions or open gas-filled vomicae. 

 In these last cases there may be an amphoric sound on ausculta- 

 tion and a crack-pot sound on percussion. These pulmonary 

 lesions are often fatal, or the recovery is slow on account of a 

 succession of lobular congestions and absesses. 



Abdominal Symptoms hi Strangles. The abdominal lesions in 

 strangles are usually secondary, the infection reaching the part 

 through the blood, or by the lymphatics from a castration or 

 other wound, or from infection by coitus. The phlegmon and 



