Diseases of the Bowels. 75 



vaglnated, within the portion anterior or posterior to it, what 

 is termed intus-susception is established. 



The small intestines are those generally involved. 



Intus-susception usually terminates fatally ; adhesion, 

 however, of the invaginated portion may take place, followed 

 by suppuration and separation of that part. 



In a recent post-mortem examination of a large mastiff 

 dog I found death had resulted from stoppage and con- 

 sequent inflammation, owing to constriction of the bowel 

 immediately in front of an old intus-suscepted portion, in 

 which adhesion was established, but the process of separation 

 had not become complete. 



In a still more recent one, of a fox-hound, I found acute 

 inflammation of the bowels at and anterior and posterior to 

 an invaginated portion of seven inches in length, in which 

 adhesion had not commenced. 



The following case was recorded by Jonathan Hutchinson, 

 in 1876 : 

 Intus-susception of the Ileum and C^cum in a Dog. 



This specimen was taken from a dog about ten months 

 old. The ileum and caecum had passed into the colon for 

 a distance of about eight inches, until the caecum nearly 

 presented at the anus. The layers were not in the least 

 adherent, and it might have been reduced by traction from 

 within the abdomen with great ease. Although the im- 

 pacted parts were much congested, there was no tendency 

 to gangrene, nor any trace of inflammatory effusion any- 

 where. It was chiefly in reference to its bearing on the 

 feasibility of operations in these cases that the specimen 

 was of interest. No treatment had been adopted during 

 the life of the animal, because no diagnosis had been made. 

 The dog was in perfect health until about eight days before 

 his death, when, without any cause perceptible, he began to 

 show signs of discomfort, and refused to hunt. He was 

 never observed to be sick, nor did he pass blood. He took 

 little or no food, and his belly became much retracted. For 



