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correct diagnosis; it will lead also to correct treatment, 

 and lastly, to the probable result of these diseases or their 

 prognosis. 



Very few diseases there are that inflammation does not 

 accompany ; but yet there are some, such as colic, diarrhoea, 

 hernia, &c. 



CATARRH, OR COLD IN THE HEAD. 



Cause. — This disease is very common amongst young 

 horses that are for the first time brought from the fresh, open 

 country, and then immured in hot, filthy stables in our large 

 cities. The hot and foul atmosphere of the close stalls in 

 such stables seems to irritate and inflame the delicate tissue 

 which lines the nostrils, as well as the other air passages of 

 this animal. In very many instances catarrh results from 

 long exposure to rain and moisture, while in other cases it 

 is produced by the sudden changes of temperature which 

 occur during the spring and fall of the year. Exposure to 

 draughts, or stabling in damp ground, may also produce this 

 disease. 



Again, this disease is often brought on by putting horses 

 to unusual and hard work, after which they are stabled in 

 hot, badly ventilated stables. These, beside other causes, 

 may excite and produce nasal catarrh. 



Symptoms. — A general dullness and stupidity comes 

 over the animal; the facial sinuses are clogged (or stuffed, 

 as it is called) ; inflammation in its first stage has arrested 

 the secretion that is usual in health. There is also loss of 

 appetite. The nasal membranes are hot, dry, and some- 

 times tumefied. There may be also symptomatic fever, with 

 chills or rigors, and a hard pulse, with difficult breathing. 

 Next comes the moist stage, when there is a discharge from 

 the nostrils of a thin character, generally accompanied by 

 sneezing and weeping from the eyes. After some time it 

 changes to a thick creamy fluid, which shows that pus has 

 formed and mixed with the abnormal secretion. 



