89 



Nux vomica, powdered. — A nerve stimulant and tonic. Dose, 

 J^ to 1 dram. It is a very useful tonic in building up the tone of 

 tlie system in convalesence from debilitating diseases and general 

 lack of vitality. Generally given in combination with gentian, 

 iron, and other tonics. 



Oil, Unseed. — Laxative (mild purgative) . Dose, i^ to 1 quart. 

 Do not use boiled oil. 



Oil, olive. — Generally used as a vehicle in making liniments 

 and oily solutions. 



Oil of tar (pine tar). — Useful for plugging holes and cavities 

 in the hoof after all suppuration has ceased. 



Oil of turpentine. — Diuretic, stimulant, antispasmodic, anthel- 

 mintic and expectorant. Dose, 1 to 3 ounces diluted with oil. 



Externally it is used in the formation of liniments (see Solu- 

 tion of Ammonia) . 



Opium, tincture of (laudanum). — Anodyne, antispasmodic. 

 Checks secretion of mucous membrane. On account of these 

 properties it is a valuable remedy in diarrhea and dysentery. 



Very useful in the treatment of all abdominal pain where there 

 are no symptoms of constipation, but as a rule belladonna and 

 cannabis indica are preferable. Dose, 1 to 2 ounces. 



Externally, opium tincture is used to relieve pain of sprains 

 and bruises. 



A very good anodyne lotion is made as follows: 

 Opium tincture, 4 ounces. 

 Acetate of lead, 1 ounce. 

 Water to make 1 quart. 



Apply every few hours. 



Opium, powdered. — Not used externally. It is used internally 

 for the same purpose as the tincture. Dose, 3^ to 2 drams. 



Potassium bromide. — Nerve sedative. Dose, J^ to 3 ounces. 

 In tetanus this medicine can be given in large doses. 



Potassium, nitrate (saltpeter).— Alterative, febrifuge, and diu- 

 retic. Dose, 1 to 4 drams. In the treatment of laminitis the 

 dose is 2 to 4 ounces, repeated three times a day. Externally it 

 makes a good cooling lotion: 



Nitrate potassium (saltpeter) , 5 ounces. 

 Chloride of ammonia, 5 ounces. 

 Water, 16 ounces. 



Mix and keep the affected parts saturated with this lotion. 



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