THE INTESTINES. 



293 



drugs is not so rare a circumstance as some imagine. In the farmer's stable 

 he has occasionally been compelled unwillingly to decide that the death of one 

 or more horses has been attributable to arsenic or corrosive sublimate, and not 

 to any peculiar disease, or to anything wrong in the manner of feeding. A 

 scoundrel was executed in 1812 for administering arsenic and corrosive sub- 

 limate to several horses. He had been engaged in these enormities during four 

 long years. The discarded or offended carter has wreaked his revenge in a similar 

 way ; but, oftener, in his eagerness to get a more glossy coat on his horses than a 

 rival servant could exhibit, he has tampered with these dangerous drugs. 



The owner may easily detect this. "Arsenic, if mixed with charcoal and 

 heated, emits a very perceptible smell of garlic. Sulphuretted hydrogen, added 

 to a watery solution of arsenic, throws down a yellow precipitate lime-water 

 a white one and the ammoniaco-sulphate of copper a green one *." 



The following are the tests of corrosive sublimate : " It is sublimed by 

 heat, leaving no residuum, and is soluble in water, alcohol, and sulphuric ether. 

 Lime-water gives either a lemon-yellow precipitate, or a brick-dust red one. 

 The iodide of potash occasions a scarlet precipitate. The most curious test is, 

 however, by means of galvanism. A drop of the suspected solution is placed on 

 a sovereign, and a small key being brought into contact simultaneously with 

 both the gold and the solution, an electric current is produced which decom- 

 poses the bichloride of mercury, for such it is. The chlorine unites with the 

 iron, and the mercury with the goldt." 



THE INTESTINES. 



The food having been partially digested in the stomach, and converted into 

 chyme, passes through the pyloric orifice into the intestines. 



CUT OP THE INTESTINES. 

 ff 



a The commencement of the small intestines. The ducts which convoy the bile and tLo 



secretion from the pancreas are seen entering a little below. 

 b b The convolutions or winding of the small intestines. 

 c A portion of the mesentery. 

 d The small intestines, terminating in the caecum. 

 e The csecum, or blind gut, with the bands running along it, puckering and dividing it into 



numerous cells. 



* Manual of Pharmacy, by Professor Morton, Lecturer on Veterinary Medicine at the 

 St. Pancras Veterinary College, p. 42. f Ditto, page 184. 



