OZENA. 105 



cler catarrh or cold, is increased in quantity, and altered in ap- 

 pearance and consistence. Tliis will properly belonir to the a.-- 

 count of catarrh or cold ; but that wiiicli is innnediately undei 

 consideration, is a continued and oftentimes proi'use discharge of 

 thickened mucus, when every symptom of catarrh and fever has 

 passed away. If the horse is at grass, the discharge is almost as 

 green as the food on which he lives ; — or if he is stabled, it is 

 white, or straw-coloured, or brown, or even bloody, and some- 

 times purulent. It is either constantly running, or snorted out 

 in masses many times a day ; teazing the horse, and becoming a 

 perfect nuisance in the stable, and to the rider. This has been 

 known to continue several mouths, and eventually to destroy the 

 horse. 



If the discharge is not offensive to the smell, nor mixed wtih 

 purulent matter, it is probably merely an nicreased and some- 

 what vitiated secretion from the cavities of the nose ; and, all 

 lever having disappeared, will frequently yield to small doses ol" 

 blue vitriol, given twice in the day. If fever or cough remains, 

 the cough medicine that will hereafter be described must be 

 dmbined with the tonic. If the discharge is mingled with pus, 

 and very offensive, the vegetable tonics, gentian and ginger, may 

 be added to the copper ; but there is now reason to apprehend 

 that the discharge will not be controlled, and will termuiate in 

 glanders. Turning into a salt marsh will occasionally effect a 

 cure, when both the mineral and the vegetable tonics have 

 failed.* 



OZENA. 



Ozena is ulceration oi' the membrane of the nose, not always 

 or often visible, but recognised by the discharge of muco-purulent 

 matter, and the peculiar stench from which the disease derives 

 its name. It resembles glanders, in being confined, in most in- 

 stances, to one nostril, and the submaxillary gland on the same 

 side being enlarged ; but differs from it in the gland not being 

 adherent, and the discharge, from its earliest stage, being puru- 

 lent and stinking. 



There is sometimes a foetid discharge from the nostril, in con- 

 sequence of inflammation of the lungs, or produced by some of 

 the sequelae of pheumonia ; distinguished, however, from ozena, 



* Hote by Mr. Spo^ner. — It is exceedingly rare that the nasal discharge 

 s ever so profuse as that described in the text, unless produced by strangles, 

 or severe catarrh, or glanders : nor is it brown or bloody, unless connected 

 with other active disease. It is, indeed, very rare, and i< usually of a gray 

 color and free ivom smell, and seems to arise from a relaxation of the secret- 

 ing membrane of the nostrils. It should be treated by tonics internally, as- 

 sisted by good feeding and grooming. 



e 



