GENERAL DISEASES. 57 



As the ulcers extend, the secretion may become sanguineous, 

 owing to erosion of the walls of the small vessels. The 

 neighbouring lymphatics and lymphatic glands, of one or 

 both sides (according as one or both nasal cavities is affected), 

 become enlarged. Those of the intermaxillary space are 

 especially liable to become involved, and though at first 

 painful and tender, rarely suppurate, but become harder and 

 less painful. The lymphatic vessels, and especially those 

 from the nose and mouth to the glands in the intermaxillary 

 space, become nodulated, and may ulcerate and discharge a 

 purulent fluid. 



The scalp, face, and the tissues round the mouth become 

 cedematous and swollen. The affection of the lymphatics 

 spreads to those of the extremities, and nodules form on 

 them and gradually disintegrate. Owing to the changes 

 above described, the breathing of the animal becomes 

 snuffling and hoarse, and there is in many cases frequent 

 and painful cough. 



Pneumonic or Pulmonary Glanders. — This is a form or 

 complication in which the lung becomes variously compli- 

 cated, from the formation of glanderous tubercles in its 

 substance. 



It can be diagnosed by careful auscultation and percussion, 

 and by the characteristic soft dry cough. There is extreme 

 debility and anorexia. Dyspnoea is marked. (Edema of the 

 extremities and cutaneous infiltration ensue, and the disease 

 generally proves fatal before the lapse of three or four 

 weeks. 



Symptoms of Chronic Glanders. — Chronic glanders may 

 continue for many months without obviously affecting the 

 general health of the animal. It differs from the acute form 

 of the disease in the facts that its local phenomena are 

 more important and numerous, and that the constitutional 

 symptoms are more trivial and variable. The chronic form, 



