152 THE DISEASES OF THE DOG. 



painting the part, after removal of the hair, with tincture 

 of iodine, and the internal administration of iodine in half- 

 grain doses morning and evening will permanently reduce 

 the enlargement. The introduction of setons, excision of 

 the glands, blistering, and other heroic methods should not 

 be resorted to. In acute cases, as described by Youatt, 

 the sudden enlargement of the thyroid is considerable, and 

 pressure is brought about on the jugulars, trachea, and 

 oesophagus, which are all more or less obstructed, and 

 suffocation may result. The patient sleeps much, is dull, 

 and may die quietly ; symptoms probably the result of 

 jugular obstruction. In some cases suppuration occurs, 

 and very extensive ulceration as a sequela ; these are pro- 

 bably scrofulous in their nature, and generally prove 

 incurable. 



The Thymus Body is large in puppies, and slow to dis- 

 appear. It is entirely confined to the anterior mediastinum, 

 and there is no record to hand of it being diseased in 

 carnivora. 



