PHARMACEUTICAL PREPARATIONS. 139 



the objects viewed and delineated. It Is a useful mode of 

 drawing to represent extensive districts of country, battle- 

 fields, panoramic views, etc. 



Ichnog'raphy (Cxr. ichnos, a trace, and grapho, I draw). — The 

 view of anything cut off by a plane parallel to the horizon 

 just at the base of it. 



Projec'tion. — The appearance or representation of an object on 

 the perspective plane. 



Scenog'raphy. — The art of perspective, or the representation 

 on a plane of an object as it appears to the eye. 



PHARMACEUTICAL PHEPARATIONS. 



Ce'rate. — A composition made of oil, wax, and other ingre- 

 dients. 



Chalybeate. — Any medicine into which iron enters. 



Confection. — Anything made up or preserved with sugar. 



Conserve'. — A vegetable substance and a sufficient quantity of 

 sugar beaten into a uniform mass. 



Decoction. — A medicinal liquor, made by extracting the solu- 

 ble and efficacious part of many drugs, particularly of 

 barks, woods, seeds, roots, etc., by boiling. 



Den'tifrice. — A powder or paste for cleansing the enamel of 

 the teeth and removing the tartar which covers them. 



Elec'tuary. — A form of medicine of a soft consistence, some- 

 what thicker than honey, and formed of powders, pulp, ex- 

 tracts, syrups, honey, etc. 



Elixir. — A medicine composed of various substances held in 

 solution in alcohol. 



Emulsion. — A milk-like mixture which is composed of oil 

 divided and held in suspension in water by means of 

 mucilage. 



Es'sence. — A compound used in flavoring liquors or confec- 

 tionery, and consisting chiefly of ethers and essential 

 oils. 



Ethe'real Tinc'ture. — ^A tincture formed by the action of sul- 

 phuric ether, at the ordinary temperature, on medicinal 

 substances. 



Ex'tract. — A solution of the purer parts of a mixed body in 

 spissated by distillation or evaporation nearly to the con- 

 sistence of honey. 



