476 NAVIX ox THE HORSE. 



often needed by the horse, even in health. He should have it 

 several times a week. He can hardly have too much, if it is 

 often given. It is necessary to healthy digestion. It is ele- 

 gant on the food after severe illness. Half a dram of salt in 

 four ounces of water, makes a good eye-water. Strong salt- 

 water is a good wash for sore shoulders and back. A double- 

 handful of salt and one-fourth of a pound of soap, dissolved 

 in a gallon of water, form a good cathartic injection. When 

 a horse is not eating, he may have thin gruel with salt in it, 

 which he will drink instead of water. It will nourish him and 

 improve his appetite. 



Chloride of soda is a good disinfectant, but not so good as 

 chloride of lime. One part of chloride of soda dissolved in 

 twenty-four of water is a fine application to fistula, poll-evil, 

 and farcy sores. 



Soap. — Castile-soap is sometimes combined with cathartic 

 balls, to make them dissolve quicker. It is diuretic. It is 

 properly used in washing and cleansing sores. 



Sugar of lead is found in the stores, in the form of coarse 

 crystals. It is white, and has a sweetish, astringent, or puck- 

 ering taste. It is used as an astringent, in inflammation of 

 the eyes, in proportion of one or two drams to a j)int of water. 

 It is used in diabetes and inflammation of the womb, which see. 



SulpMric Acid. — Impure sulphuric acid is much used for 

 mechanical purposes, under the name of oil of vitriol. This 

 is unfit for medical use. The pure sulphuric acid is of a dark 

 brown color. It is a caustic, used externally in grease-heel 

 and scratches, in the prescriptions given under those diseases. 

 Internally, it is a tonic, improving the appetite and digestion. 

 The dose is from one to two drams, in a bucket of water, once 

 or twice a day. 



Sulphuric ether is a clear liquid, with a peculiar sweetish 

 smell, and evaporates very fiist when exposed to the air. It is 

 a powerful antispasmodic (relieving pain). Its effects are 

 similar to chloroform. It is more frequently used internally 



