SNAKE ROOT. — SPERMACETI, IGl 



Soft soap is very useful in cleansing foul 

 heels; and when mixed with oil of turpen- 

 tine and spirit of wine, forms a good embro- 

 cation for strains, bruises^ and indurated tu- 

 mours. 



SODA. Natron, or the Mineral Alkali, 

 This is procured chiedy from the ashes of 

 marine plants. Its medical properties are 

 nearly the same as potash, but the prepared 

 natron or soda is sometimes preferred as an 

 ingredient in purgative and tonic medicines. 



The dose is from two to four drams. 



SOUTHERNWOOD. A fragrant shrub, 

 directed by the London College as an ingre- 

 dient in fomentations. 



SPANISH FLIES. (See Cantharides.J 



SPEARMINT. (See Mint.) 



SPi'-RMACETL An unctuous substance, 

 procured from the head of a certain species 

 of whale. In medical practice it is often 

 employed as a demulcent, to allay irrita- 

 tion, as in cough, but is rarely employed in 

 veterinary practice, and appears to differ 

 very little in its medical properties from 

 hoo-'s lard or suet. It has been lately dis- 

 covered that the muscular parts of all ani- 

 mals may be converted into a substance re- 



