Stearin Paste

Made like cerate paste, but with stearin.

Serum Paste

Finely powdered zinc oxide made into a thin paste with fresh ox-blood serum; paint on glass plates to scale, dry, powder, and sterilise by heating at 75° C. for twelve hours.

Mollin, or salve-soap (sapo unguinosus), is another basis prescribed by Dr. Unna. This is made by saponifying 40 parts of lard with potash (50 parts of a solution of sp. gr. 1.130 evaporated to 40 parts) and 4 parts of rectified spirit in the cold, then adding 15 parts of glycerin to the soft soap formed. Both liquids and solids to be taken by weight. The product contains 12 per cent, of free fat. The following are the more, common combinations, the figures representing the quantities of the medicaments in too parts:

Dr. Unna's jelly application called Gelanthum is made by steeping tragacanth 3iiss. and gelatin 3ij. in water 10 ounces for twenty-four hours (keeping in a steam-bath). The paste formed is pressed through muslin, glycerin fl. 3vj. added, the whole heated on a water-bath for an hour, and made up to 12 ounces by weight with water in which 1/4 grain of thymol is dissolved. Gelanthum is employed as a basis for medicaments.

Jellies for internal use are rarely prescribed for extemporaneous compounding, but it may be useful to state that for every 100 grammes of jelly 4 grammes of isinglass, 5 grammes of dry gelatin, 10 grammes of Irish moss, 15 grammes of Iceland moss, 10 grammes of starch, 3 grammes of salep, or 5 grammes of tragacanth is required. After boiling, skimming, and straining, jellies should stand for three hours in a cold place. Medicinal additions should be made to the strained or skimmed jellies while hot.

Copaiba, cod-liver oil, and castor-oil jellies are sometimes prepared by melting 5 or 6 parts of the oil or balsam with 1 part of spermaceti, and leaving to cool.