218 INOKGANIC AGENTS 



thrush when worked up into the commisure of the hoof, 

 between the frog and the bars, and retained in place by 

 oakum packing. 



Internal. — Calomel is a purgative, intestinal antiseptic, 

 diuretic and alterative. It is also used for its remote anti- 

 phlogistic effects. It is particularly adapted to dogs, and is 

 given in a single dose, or often, to better advantage, in half- 

 grain doses, reJDeated every two hours till purgation occurs. 

 For diarrhoja or vomiting in dogs, calomel is useful in 

 removing the source of irritation, in being antiseptic and 

 easily borne by an irritable stomach. In accordance with the 

 theory that calomel is transformed by the alkaline intestinal 

 secretions into the grey mercurous oxide it has been the cus- 

 tom to combine sodium bicarbonate with it in order to facili- 

 tate this transformation. Sufficient evidence to substantiate 

 the occurrence of the transformation is wanting and the 

 clinical value of the combination is doubtful. The adminis- 

 tration of calomel should be followed by oil, salines or other 

 cathartics, if purgation does not occur within twenty-four 

 hours after its ingestion, otherwise mercurialism may occur. 



In heptogenous jaundice, with light-colored faeces, gas- 

 tro-duodenitis or constipation, calomel is a valuable remedy 

 for dogs. In the jaundice occurring as a form of influenza 

 in horses, nitro-muriatic acid is more effective. Calomel is 

 one of the best remedies for the 'treatment of dysentery, un- 

 less there is great weakness. It should be continued in re- 

 peated small doses till the character of the discharge changes. 

 Foals and calves, with indigestion and diarrhoea, may be 

 given calomel to advantage to remove the source of irritation 

 in the digestive tract. Calomel must be combined with a 

 small dose of aloes, or with linseed oil, to form an effective 

 cathartic for the horse. As aloes acts on the large, and calo- 

 mel on the small, intestines, the above combination secures a 

 general purgative influence. 



Cattle are given calomel, followed by the administration 

 of salines, to produce free catharsis. As a remedy for round 

 worms, -J to 4 grain each of santonin and calomel, with 5 

 grains of sugar of milk, are administered to dogs four times, 

 at half hour intervals, and followed by castor oil. Lumbri- 

 coid worms in the horse may be treated by conjoining 2 



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