6 bVNOPSIS OF VETERINARY 



INFUSI — Infusions. — (4 official). Are aqueous prepara- 

 tions of veg. drugs, using cold or hot water, but without boiling, 

 and let stand for y 2 to two hours; they differ from decoctions 

 only in the degree of heat, 23 grains to the ounce; as Infusum 

 Cinchonse and Infusum Digitalis. 



BLIXIRIA — Elixirs — (2 official). Aromatic, sweetened 

 preparations, containing active medicinal agents in small quan- 

 tities, with a menstruum of alcohol and water ; as Elixir Aromat- 

 icum and Elixir Phosphori. 



EMPLASTRA— Plasters.— (13 official). Preparations of 

 solid, tenacious, but pliable compounds spread on linen, silk, etc., 

 intended to adhere to the surface of the body; as Belladonna 

 Plaster, Arnica Plaster, Iron Plaster, etc. 



EXTRACT A — Extracts. — (32 official). Preparations ob- 

 tained by evaporating a solution of the medicinal principle of 

 vegetable drugs, to a consistence of a soft solid or dryness. 



They are termed inspissated juices, aqueous extracts, alco- 

 holic exts., hydro alcoholic (water and alcohol) and ethereal 

 extracts, according to the menstrua used ; they are 2 to 4 times 

 stronger than the official agent used. 



EXTRACT A FLUID A— Fluid Extracts.— (88 official). 

 Are made by first extracting a veg. drug with alcohol, diluted 

 alcohol or alcohol and water; then concentrating the resulting 

 solution by evaporation, and when necessary adding glycerin as 

 a preservative against decomposition. They are of uniform, de- 

 finite strength, and one minim of the fid. ext. represents one 

 grain of the original drug. 



They are a most valuable class of drugs for use in veterinary 

 p.-actice on account of their concentration and keeping propen- 

 sities, and the small size of the dose. 



GLUCOSIDEA — Glucosides. — (6 official). They are sim- 

 ilar to alkaloids but only differ chemically; this class of drugs 

 can be distinguished by their ending in the Latin suffix of inum, 

 or English, in; they are organic compounds belonging to the 

 group of neutral non-nitrogenous principles which exist in plants 

 and which are resolved into glucose and other principles by the 

 action of reagents, or natural ferments ; as Santoninum-Santonin, 

 Salicinum-Salicin. 



