78 THE DISEASES OF THE HORSE. 



BRONCHOCELE OR GOITER (Tumor of the Thy- 

 roid Gland), 



Is rare in horses. It is usually small and harmless, but 

 when it increases to the size of a hen's egg or larger, it 

 may cause choking. Percivall reduced such a swelling by 

 rubbing with compound iodine ointment daily for six 

 weeks, but he was in doubt whether the tumor caused the 

 choking or not. 



Fig. 16. Bronchocele. 



The tumor, as the illustration shows, appears just be- 

 low the part grasped to excite coughing. It is circular 

 or ovoid in shape, and is soft, puffy, moveable, and devoid 

 of sensibility. 



