STRANGULATION OF THE BOWELS. 171 



Sitting on his haunclies. From these various symptoms, I felt 

 convinced that a stone was the cause ; and the animal being de- 

 stroyed, the large calculus was found firmly impacted in the 

 second curvature of the colon, whence it could get neither back- 

 wards nor forwards. On dividing it with a saw, a pebble Avas 

 found to be its nucleus, and it consisted of a vast number of 

 rough and smooth layers alternately arx*anged, the external one 

 being rouoh. 



In some instances, a vast number of stony substances have 

 been found loose in the intestines, their weight, though not their 

 size, preventing their passing onwards. 



Some horses have a depraved appetite, and take great quan- 

 tities of earth when they have the oi)portunity, which certainly 

 must conduce greatly to the formation of these concretions. — 

 Ed.] 



Strangulation of the Bowels. 



[On the inspection of the bodies of horses that are supposed to 

 die from colic, we sometimes find the small intestines stran- 

 gulated by being formed into a knot, so as to produce the most 

 intense pain, and a complete interruption to all passage. Some- 

 times a most perfect knot is formed by one portion of the intes- 

 tine being insinuated between a sort of noose formed by another 

 portion. Another time we find that a noose is formed by a slip 

 of the mesentery; which, by some means, has got separated 

 from the rest. 



Another variety is called intro-susception, and consists of one 

 portion of the intestine insinuating itself within the cavity of 

 another. Sometimes the stricture is caused by a fatty tumour 

 attached to the mesentery, or an enlargement of the mesenteric 

 gland ; as related by Mr. W. Percivall in the Veterinarian, 

 vol. i. p. 326. 



Another variety is a strangulation from simple twisting of 

 the ^ni ; as shown by Mr. C. Percivall, Veterinarian, vol. i. 

 p. 326. 



Besides these, there may be a stricture without any twisting 

 or entanglement : this generally occurs in the duodenum. 



No. 1. represents the first variety of strangulation of one or 

 two portions of the ileum, being insinuated into a noose formed 

 by another portion. It occurred to the Editor of this work, and 

 is taken from the Veterinarian, vol. vi. p. 12. 



No. 2. represents the second variety. It is a strangulation of 

 the rectum ; and was related by Mr. Fuller in the Veterinarian, 

 vol. vi. p. 25Q. 



No. 3. is a case, related by ISIr. Bull, of strangulation of both 



