ESSENtrS OF PEPPERMINT. 81 



EMBROCATIONS. (See Pharm.J . 



EMULSION. A term given to prepara- 

 tions ill which oil is blended with water, by 

 means either of mucilage, the yolk of an 

 egg. or a small quantity of alkali. (See Al- 

 kali.) Emulsions have a miiky appearance, 

 and are a convenient vehicle for pectoral 

 medicines, being supposed to possess that 

 oucilitv in some dec^ree. 



ENEMA. (See Glysters.) 



EPISPASTICS. See Blutevs. 



ERYNGO, the root. A weak aromatic 

 stimulant, of no use in veterinary medi- 

 cine. 



EPSOM SALT, or Vitriolated Magnma. 

 A neutral salt, formed by the combination 

 of magnesia and vitriolic acid. It is com- 

 monly obtained from the water of certain 

 springs, in which it is formed by nature. 

 The virtues of this salt are similar to those 

 of G/aubev^s salt. (See Glauber's Salt. J 



ESSENCE. This term is applied to es- 

 sential oils, and very properly, since they 

 generally contain all the medical virtues 

 of the substance from which they are ex- 

 tracted. 



Essence of Peppermint. The prepa- 



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