CALCULUS, OR STONY CONCRETIONS. 259 



CALCULUS, OR STONY CONCRETIOJNTS. 



Calculous deposits are not unfrequently found in the stomach, 

 intestines, bladder, kidneys, liver, brain, and in the glands, 

 more particularly in the salivary glands ; often giving rise to 

 much difficulty, particularly when situated in the brain, salivary 

 glands, or bladder. 



Stones in the stomach and intestines of the horse are quite 

 common. Tlie author has seen several weighing from one to 

 three or four pounds ; and Mr. Spooner mentions one in his 

 possession weighing little less than six pounds. There were 

 found by the author in the stomach of a horse which died of 

 colic, one hundred and fifty-one barrel nails, two buttons, and 

 three small calculi. This horse belonged to a baker, and had 

 been fed with the scrapings of the shop. The nails presented a 

 very singular appearance, many of them being entirely covered 

 with calculous deposits, and others covered with the same 

 deposits on the heads and points, presenting a body with two 

 heads. 



The presence of these foreign bodies in the stomach and 

 intestines occasions frequent attacks of colic, and sometimes 

 produces inflammation of the bowels. Miller's horses are 

 supposed to be most subject to these accumulations. These 

 abdominal calculi generally have a metallic nucleus, are com- 

 posed of the triple phosphates, and are generally round and 

 smooth. When first taken from the intestines, they are of a 

 brown or greenish color, but they soon become white. When 

 a horse is subject to frequent attacks of colic, not occasioned 

 by feeding upon corn, these accumulations may reasonably be 

 guspected to be the cause. 



