DRUGS AND THEIR USES 5 



aphtha and superficial ulceration of the mouth when combined with borax 

 or tannic acid. 



Gum Acacia. — Used as a demulcent in coughs and sore throats, also 

 in cases of irritation of the stomach and the intestines. 



Hydrochloric Acid (Diluted). — Useful in indigestion where the acid 

 secretion of the stomach is deficient. Given in combination with quinine, 

 it ;irrests discharge from the nose in chronic nasal gleet, and is an excellent 

 tonic and astringent. 



Indian Hemp. — May be used in painful neurotic affections to deaden 

 pain and produce sleep. 



Iodide of Mercury (Red). — Counter-irritant and vesicant. Used in 

 the proportion of 1 part to 8 of lard as a blister to the legs of horses for 

 splints and other ossific diseases, as well as chronic sprains to tendons, 

 ligaments, and enlarged joints. Milder preparations are also employed as 

 applications to glandular enlargements and other chronic swellings. 



Iodide of Potassium. — When administered in full doses it causes 

 glandular tumours to disappear, and arrests the formation of exostoses, 

 such as splints, ring bones, &c. In acute and chronic rheumatism it is 

 sometimes beneficial, and as a diuretic it disperses dropsical effusions. 



Iodide of Sulphur. — Sometimes used as a dressing in chronic skin 

 eruptions in the proportion of 1 part to 10 of glycerine or lard. 



Iodine. — In solution it is applied externally for the removal of chronic 

 enlargement of the joints and glandular swellings. It is also used as a 

 parasiticide in the treatment of ringworm, and inhalation of the vapour of 

 iodine has been successfully used in chronic nasal catarrh. 



Ipecacuanha. — In the form of Dover's powder it is sometimes used as 

 an expectorant and diaphoretic. 



Jaborandi. — In small doses it causes the removal of dropsical effusions 

 into the chest and abdominal cavity. It also produces sweating, and some- 

 times gives relief in bronchial asthma. It has not been employed to any 

 considerable extent in the treatment of the lower animals. 



Lime-water. — Mixed with olive oil or glycerine it is applied to skin 

 eruptions and abrasions to allay pain and soreness. Injected into the 

 vagina it is beneficial in leucorrhcea. Given to foals in small doses three 

 or four times a day it arrests diarrhoea. Mixed with linseed or olive oil 

 it forms " carron oil", commonly used for burns and scalds. 



Linseed Oil. — It is aperient, laxative, and emollient. Two tablespoon- 

 fuls given in the food is an excellent alterative when given to poor, un- 

 thrifty animals, and to horses after an attack of influenza, strangles, &c. 



Morphia. — Th« salts of morphia are derived from opium, and possess 

 very much the same therapeutical properties. As an efficient dose of the 



