DISEASES OF HORSES. 705 



Three times a day, for two or three days. Professor Williams 

 gives the following as his favorite internal medicine : 



Take Arsenic, ....... 1 dram. 



Bicarbonate of Soda, ..... 1 dram. 



Water, 12 ounces. 



Mix, and heat slowly, until the arsenic is dissolved ; then 

 strain through a cloth, and give a half ounce at a dose twice a 

 day. If the swelling remains in the legs after the soreness has 

 subsided, a bandage applied, to give slight pressure, is very 

 useful. 



Surfeit. Also called Nettle-rash and Urticaria. 



CAUSES. Any thing that will irritate the skin: stings of 

 insects, sudden changes of temperature or diet, disorders ac- 

 companying pregnancy, disorders of the digestive system, or 

 any defective action of the kidneys. 



SYMPTOMS. There are small elevations or lumps called 

 wheals. These wheals vary in size, from that of a pea to that 

 of a chestnut, or larger, in rare cases, and appear suddenly on 

 any part of the body, and are liable to disappear as suddenly as 

 they came, and again reappear on the same or some other part 

 of the body. They are elastic, and give way to pressure. They 

 are filled with a fluid which is sometimes discharged by the 

 bursting of the enlargement. 



TREATMENT. Give six drams of Barbadoes aloes, and, in six 

 or eight hours, 



Take Nitrate of Potash, ...... 2 drams. 



Camphor Gum, ....... 1 dram. 



Oil of Juniper, ...... 1 dram. 



Mix. Give at one dose, three times a day, until the lumps 

 disappear, Or, 



Take Iodide of Potash, 2 drams. 



Colchicum (powdered), ..... 20 grains. 



Mix. Give as one dose, three times a day, as above. 



Mange Scabies Itch. This is a skin disease caused 

 by parasites. It occurs in the horse, ox, sheep, dog, and man, 

 and can be transmitted from one to another. Animals in poor 

 condition, with long, dirty hair are most liable to have it, but 



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