74 THE DISEASES OF THE HORSE. 



or treble the quantity. Sometimes the lower jaw glauds 

 are swollen, sometimes not. Sometimes there is an offen- 

 sive smell, sometimes not. The nasal membrane becomes 

 pallid and leaden-hued, but is free from pus or ulcers. 

 Health, spirits, and appetite good. (Percivall.) 



Fig. 15. Injecting for Nasal Gleet. Holes made by trephine. 



Remedy. — Sulphurous acid, iodine, iodoform inhala- 

 tions. Nasal douches of salt and water, with a few drops 

 of iodine tincture. Bleaching powder scattered in box. 

 Copper or iron sulphates, arsenic, turpentine, buchu, co- 

 paiba internally. Blister over sinuses. Remove bad teeth. 

 When other treatment fails, trephine sinusus ; after re- 

 moving as much pus as possible, wash out with antisep- 

 tics. Isolate all horses with suspicious nasal discharges. 



For doses, see pages 13 to 29. 



ROARING 



Is a symptom of disease rather than disease. It is a 

 species of unsoundness, and may be detected sometimes 

 by a mere fright — sudden jump ; sometimes great exertion 

 is needed. Veterinarians detect it sometimes by a grunt- 

 ing or groaning cough, which they produce by grasping 

 the throat. It is sometimes hereditary. *'* The produce 

 of certain sires are nearly all roarers," (Williams.) It 



