262 THE FARM DOCTOR. 



Treatment in all cases consists in stopping the ingestion of 

 the poison and carrying off from the bowels any that still 

 remains there. Double the usual amount of purgative medicine 

 must be given, with stimulants, their action favoured by injec- 

 tions, and the brain symptoms kept in check by applying cold 

 water or ice to the head, as well as by broniide of potassium. 

 In iead-poisoiiing sulphate of magnesia or soda are the appro- 

 priate purgatives, and -^- oz. sulphuric acid should also be given 

 in two parts of water to precipitate in an insoluble form any 

 lead that may still be retained. If later there is a suspicion of 

 lead being retained in the system, give iodide of potassium. 

 Should paralysis persist when the active symptoms have passed 

 away, treat that on general principles. 



SUN-STROKE, 



This is especially common in horses in the hot months and 

 in the large cities, but is seen in cattle and sheep as well, when 

 exposed to the full glare of the sun. Among the causes which 

 co-operate in its production may be mentioned, foul, badly- 

 aired stables, tight collars or girths, overwork in hot weather, 

 heavy milking in cows, obesity, poor, unwholesome food, and 

 indeed any health-deteriorating condition. Horses are usually 

 attacked while being speeded, or at heavy draught work, in' a 

 collar, and exposed to the direct and reflected rays of the sun, 

 as in a valley, on a hillside, or in the streets of a city. 



Symptoms. — Sometimes without any observed premonitory 

 sign the horse will suddenly stop in harness, droop his head, 

 prop himself out on all four limbs, pant violently, fall, and after 

 some convulsive movements, die in a state of coma, marked by- 

 stertorous breathing. In other cases the attack is slower, the 

 horse flags in gait, responds very imperfectly, if at all, when 

 urged, hangs on the bit, may perspire freely, or have a dry 

 burning surface, and becomes unsteady on his limbs. If gUU 

 urged he falls, but if allowed will stand with legs .extended, 



