624 MEDICINES. 



the addition of a little acid, sulphuric for instance, to make it 

 dissolve in water. Tincture of iron contains a certain amount 

 of free nitro-hydrochloric acid. 



Sal-ammoniac. 



See p. 541. 



Sodium. 



Soda, Bicarbonate of (^Baking Soda), 



corrects acidity of the stomach ; allays in a marked manner irrita- 

 tion of the mucous membrane of the intestinal canal; and assists 

 the liver in purifying the blood. Dose, 2 oz. daily in the food. It 

 also acts as an antiseptic (p. 68). 



Soda, Hyposulphite of, 

 is given internally as an alterative and antiseptic. 



Spirits. 



Brandy and whisky, may be given in :|-pint doses, mixed with 

 water. We should remember that when stimulants are given to 

 keep up the strength in wasting diseases, they should be used only 

 to improve the appetite. If they fail in this, they should be dis- 

 continued ; for any apparent improvement in the strength will be 

 obtained at the expense of the tissues. 



Steel, Tincture of. 



See " Iron, Tincture of." 



Stout. 



See " Ale." 



Strychnine 



is one of the active principles of max vomica. One grain of the 

 hydrochlorate of strychnine, dissolved in 100 parts of water, may 

 be injected subcutaneously. 



Nux Vomica 



is a valuable nervous stimulant, tonic, and bitter. Horses will eat 

 it if mixed in their food. Strychnine, as I have just said, is its 

 active principle. Dose, ^ to 1 drachm once or twice a day. 



