244 THE DOG IN DISEASE. 



It is recognizable as an enlargement of the neck with- 

 out the redness, heat, and other signs of inflammation that 

 would precede the formation of an abscess, although this 

 is a possible result, especially if the part has been injured. 

 It is most frequent in young dOgs, and is apt to give rise 

 to trouble by interference with swallowing or respiration. 



Treatment. — Surgical procedure is to be avoided un- 

 less an abscess forms, when it should be opened. Atten- 

 tion should be paid to the general health, and syrup of the 

 iodide of iron or iodide of potassium and a vegetable bit- 

 ter may be tried, as well as tonics, etc. 



However, many cases will yield to counter-irritation, 

 painting with tincture of iodine having special claims to 

 success. Whenever this remedy is to be used on the dog 

 it is better to snip the hair away as completely as possi- 

 ble over the affected region. 



DISEASES OF THE ALIMENTARY TRACT. 



General. — The disorders of this, like other regions of 

 the l)ody, become the clearer when the natural structure 

 and functions are borne in mind. 



Though certain organs, as the liver and pancreas, seem 

 to be separate from the " digestive tract," as that term is 

 commonly understood, the history of the embryological 

 development of this region of the body shows that they 

 are outgrowths from a main tube which is at one period 

 a straight gut and which becomes differentiated as devel- 

 opment proceeds. Such a fact explains in some measure 

 that sympathetic connection which is very conspicuous in 

 all ailments of these parts. 



In general it may be said that the digestive tract con- 



