so far, in my opinion, nothing is better than tracheotomy; by this, 

 a horse can be made serviceable for years, either for fast or slow work. 



503. In an examination for soundness, it isamatter of vast importance 

 to carefully test the wind. In a strong horse, particularly, it is usual 

 to put the animal against the wall, and feign to strike it. If the 

 subject be a roarer, it will, in the majority of cases, give a long 

 groan ; but if a sharp grunt be emitted, the probability is that the 

 horse is only a nervous grunter. Nevertheless, the animal may make 

 no sound whatever, and yet be a confirmed roarer ; and, therefore, I 

 consider this a very imperfect test.. The best plan is either to gallop 

 the horse some distance, or to make it pull a heavy load up hill. 

 These trials will soon prove whether the animal is a roarer or not. 



504. Whistlers and Highblowers are modified forms of roarers, 

 and should always be regarded with suspicion. The causes are 

 generally similar to those which produce roaring. 



505. Bronchocele or Goitre. — This is an enlargement of the 

 thyroid gland [Plate XXXIII. , No. 20), by no means common in 

 domestic animals, but of frequent occurrence in human beings, 

 especially those living in limestone districts, near high mountains. — 

 e.g. — the Alps and Himalaya. Iodine preparations I have found 

 to have the best effect, such as two drachm doses of iodide of 

 potassium given once a day in a mash, for ten days or so, and iodide 

 ointment applied to the enlargement once every third day [see 

 Appendix). 



506. Bronchitis, or inflammation of the lining membrane of the 

 bronchial tubes in the lungs, may either be acute or chronic, and may 

 affect one or both lungs ; while either the large or small branches of the 

 bronchial tubes may be aUacked separately, or in conjunction. It is 

 a very serious complaint ; for if, from the inflammatory process, some 

 of the bronchial passages, particularly the larger branches, become 

 blocked up, the blood cannot get properly oxygenated, and impure 

 blood is therefore sent through the system, acts on the nerve centres, 

 and causes great debility very earl}^ on in the complaint. Symptoms: 



