OFFICIAL PREPARATIONS 77 



tions of drugs and sugar of milk, prepared by trituration. 

 They occur in powder^'or are pressed into tablets. 



Oleum, pi. Olea. — Fixed oils are usually obtained by 

 mechanical expression from the product of plants or the 

 tissue of animals. 



Pilula, pL PUulce. — Pills are preparations of drugs made 

 into globular form by the addition of a suitable excipient, 

 and should be of a convenient size for swallowing. 



Massa, pi. Massce. — Masses are pasty mixtures suitable 

 for making pills. 



Siippositorium, pi. Suppositoria. — Suppositories are 

 medicinal substances incorporated with cacao butter and 

 moulded into solid, usually conical, bodies intended for 

 introduction into the rectum or vagina, where they melt at 

 the temperature of the body. 



Covfectio, pi. Co7i fed (ones. — Confections are pasty masses, 

 consisting of powder incorporated with syrup. 



VIII. — Preparations Intended for External Use. 



Linimentum, pi. Lmzmen^a.— Liniments are liquid pre- 

 parations with an oily or soapy basis. 



OleaturUj pi. Oleata. — Oleates are medicinal solutions in 

 oleic acid. 



Unguentum, pi. Unguenta. — Ointments are preparations 

 having a fatty basis (80 per cent, of lard). 



Ceratum, pi. Cerata. — Cerates are similar to ointments 

 but harder, owing to the addition of 10 per cent, more wax. 



Glyceritum, pi. Glycerita. — Glycerites are preparations 

 whose solvent is glycerin. 



Emplastrum, pi. Emplastra. — Plasters are solid, sticky, 

 supple preparations intended for application to the skin, 

 where they become adhesive at the temperature of the body. 

 In veterinary parlance they are often known as " charges." 



Charta, pi. Ghartce. — Papers are fragments of medicated 

 paper. 



Collodium, pi. Colhdia. — Collodions are solutions of gun 



