VARIETIES, SYMPTOMS, AND COURSE OF THE DISEASE. 93 



the inguinal glands, or the glands of the mesentery, or those 

 in the chest. 



Although these irregular forms of the disease are as a rule 

 irregular from the first, it is still not unfrequently seen that 

 the local inflammatory action immediately antecedent to its 

 establishment in the parotid region or other abnormal situa- 

 tions has made an appearance in the ordinary recognised 

 situation, the submaxillary space ; but only an appearance, pro- 

 ceeding a very short space and retrogressing. When the local 

 diseased action seizes on these situations — such at least as are 

 under our observation — the progress of the action in the 

 formation of pus is as a rule tardy, and the systemic dis- 

 turbance considerable ; usually no well-formed abscess is 

 the result, but the gland-structure may become permanently 

 indurated and destroyed. At other times, particularly when 

 affecting the lymph-glands at the point of the shoulder, the 

 abscess is of great extent, and the pus well formed and laudable. 



When the formation of the abscess occurs in connection 

 with the gland-structures of the chest or abdomen, or with 

 other internal organs, the symptoms of such disturbance vary 

 in accordance with the organs and structures invaded. In all 

 these conditions where there is a tendency to the formation 

 of pus in connection with internal organs, we may expect a 

 somewhat changed type of the fever; it will be subject to 

 intermissions and regular paroxysms, these accessions accom- 

 panied with partial or local sweatings, accelerated breathing, 

 and occasionally irregular cardiac action, marked wasting of 

 tissue, exhaustion and prostration, together with local dropsies. 



When the abscess is in connection with the mediastinum, 

 there is usually embarrassed respiration or dyspnoea, with 

 cough and anasarcous swelling at the inferior portion of the 

 chest. 



When the mesenteric gland-structures are invaded, the pro- 

 babihty is that the animal will exhibit fugitive abdominal or 

 colicky pain, a depraved appetite, and an irregular condition of 

 the bowels. 



In either of these situations the termination is apt to be 

 fatal. In the thorax this is brought about either by suffoca- 

 tion resulting from the passage of pus into the bronchi and 

 air-ceUs, or by the induction of inflammatory action in organs 



