COLD m THE HEAD. 369 



A blister may also act well by drawing away blood from the part, and by, 

 later on, causing the breaking up and absorption of any deposits which may 

 be left as a result of the iiillammation. A course of iodide of potassium will 

 tend to diminish the risk of roaring being a result of the attack ; for this 

 medicine hastens the removal of inflammatory deposits which might press 

 upon those nerves of the larynx that become altected in roaring. 



PRACTICAL TREATMENT —Allow the horse a plentiful supply 

 of fresh air. Clothe warmly. Hand-rub the legs, and rub into 

 them the following stimulating liniment : — 



IS oap liniment ... ... ... i P"^^* 



Strong liquid ammonia ... ... 1 drachm. 



and apply flannel or straw bandages. 



Make the horse inhale steam from boiling water, which may be 

 mixed with turpentine, provided that it does not distress mm. 

 Foment the throat, and, after that is done, apply the above liniment. 

 If the case be at ail serious, blister the throat with tincture of 

 cantharides. Give a drachm of the extract of belladonna twice a 

 day; place it between the horse's teeth, instead of giving it as 

 a ball, which would irritate the throat; or give the electuary of 

 belladonna and camphor as prescribed on p. 370; and give J oz. 

 nitre daily, dissolved in the water or mixed in the food. Allow 

 gruel, linseed tea, and linseed and barn mashes, and substitute 

 freshly-cut grass for hay. When the attack has subsided, the 

 horse's strength can be kept up by gruel, and milk with eggs 

 beaten up in it. Drenches and balls should not be used, as they 

 would irritate the throat. 



xlfter an attack, it is perhaps the safest plan to blister the skin 

 with biniodide of mercury ointment (1 to 8 of la.rd), under the 

 seat of the disease, three or four times in succession, and to put 

 the horse on a course of iodide of jDotassimn — two drachms twice 

 a day in the water — ^for a fortnight ot three weeks. 



In severe cases, tracheotomy is often the only means of saving 

 the patient's life. 



Acute Nasal Catarrh ( Co/d in the Head) 



is inflammation of the mucous membrane which lines the nostrils 

 and air passages of the head. It is generally caused by exposure 

 to cold and wet, aided by change of temperature. It appears to be 

 capable of being propagated by infection. 



SYMPTOMS. — ^Catarrh is often ushered in by sneezing. At first 

 the mucous membrane which lines the nostrils and eyelids is red 

 and dry. This condition is soon followed by a watery discharge 

 from these parts. In a few days the discharge becomes yellow, 



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