IKTRODUCTION". 



partially evaporated, so that one grain of the drug is 

 represented by one minim of the finished fluid ex- 

 tract. 



Glucosidea, glucosides, are organic compounds 

 existing in plants, and belong to the group of neutral 

 principles. They all are resolved into glucose and 

 some other principle when treated with certain re- 

 agents or natural ferments. Salicin, santonin, elate- 

 rin, etc., are glucosides. 



Glycerita, glycerites, are mixtures of medicinal 

 substances with glycerin — as glyceritum acidi tan- 

 nici (twenty per cent.). 



Infusi, infusions, are aqueous preparations of veg- 

 etable drugs, using hot or cold water, but without 

 boiling, in the proportion of ten per cent. , unless oth- 

 erwise ordered. 



LiNiMENTA, liniments, are thin oleaginous prepa- 

 rations for external use with friction. They are 

 made by dissolving various drugs in oily hquids, or 

 in alcoholic liquids containing fatty oils. 



LiQUORES, solutions, include all aqueous solutions 

 of non-volatile substances, except syrups, decoctions, 

 and infusions (liquor gutta-perch^e is an exception ; it 

 is a: solution of gutta-percha in chloroform) . 



MiSTURyE, mixtures, are aqueous preparations of 

 insoluble substances held in suspension by a suitable 

 vehicle. 



MuciLAGiNES, mucilages, are thick, viscid liquids, 

 prepared by dissolving gum in water or by extracting 

 with water the mucilaginous principles contained in 

 certain plants. 



