SODA. 261 



decoction, or tea of the snake root to their horses. It 

 is an excellent remedy in coughs, bronchitis, cold, etc. 

 Take one ounce, and boil in a pint and a half of water, 

 and strain through a sieve or strainer. 



Dose. — For a horse, half a pint ; mixed in his feed, night 

 and morning. 



SialagOgues. — Medicines which increase the secretion 

 of saliva, such as aconite in large doses, and second crop 

 clover, after it has been exposed to cold nights or a little 

 frost. 



Silver.— Nitrate of— Lunar Caustic.— Used as a 



caustic to unhealthy sores and ulcers, and a solution, 

 three to four grains to an ounce of rain or distilled water, 

 is used to the eye in purulent ophthalmia. The nitrate of 

 silver is too costly for general use. The sulphate of 

 copper, or blue stone, will for most purposes answer as 

 well, and is very cheap. 



CAUSTIC HOLDER. 



Soap. — A combination of fatty acid with an alkali. 

 Soap Liniment. — Opodeldoc. — A very useful appli- 

 cation for sprains, bruises, and for stiff joints. 



Soda. — A mineral alkali. ^ 



(1.) Carbonate of Soda. — Useful as an antacid, in 

 doses of from two to four drachms. 



(2.) Sulphate oe Soda. — (See Glauber's Salts.) 



(3.) Sulphite of Soda. — This is made by passing a 

 stream of sulphurous acid through a concentrated solution 



