Pills are medicinal substances formed into ovate, oblate, or spheroidal solids, of such size and consistency as to be easily swallowed whole. When they contain medicaments readily changeable in air, pills are usually coated with sugar or gelatin; but they may be coated with keratin when the medicament is intended for intestinal action rather than for gastric.

Prepare the official Pilulae Aloes as follows: Intimately mix 1.3 Gm. finely powdered aloes with an equal weight of pulverized soap. Incorporate just enough water to make a pilular mass. Roll the mass out into a long even cylinder, and divide it into 10 equal parts; roll each part into a spheroid.

The following Pills are official:

Pilulae Aloes. Dose 2 pills, each containing 0.13 Gm. aloes. Purge.

Pilulae Asafoetidae. Dose, 2 pills. Each contains 0.2 Gm. asafoetida. Of little or no therapeutic value.

Pilulae Catharticae Compositae. Dose, 2 pills. Each contains 0.08 Gm. ex. colo-cynth comp., 0.06 Gm. calomel, 0.02 Gm. jalap, and 0.015 Gm. gamboge. A drastic, griping purge.

Pilulae Ferri Carbonatis. Dose, 2 pills. Each contains 0.06 Gm. FeC03. Excellent for anaemia. (Blaud's Pill.)

Pilulae Ferri Iodidi. Dose, 2 pills. Each contains 0.065 Gm. ferrous iodide. Reduces readily. Used for syphilitic anaemia.

Pilulae Phosphori. Dose, 1 pill. Each contains 0.6 mg. phosphorus. Sometimes used in certain cases of rachitis.

Pilulae Rhei Compositae. Dose, 2 pills. Each contains 0.13 Gm. rhubarb and 0.1 Gm. aloes. A strong cathartic.

Cut open a sample of each Pill and report:

Sample

Color

Odor

Taste

How identified

Pil. Aloes

Pil. Asafoetidae

Pil. Catharticae Comp.

Pil. Ferri Carb.

Cut open a sample of each pill and report (continued):

Sample

Color

Odor

Taste

How Identified

Pil. Ferri Iodidi

Pil. Phosphori

Pil. Rhei Comp.

Dissolve 3 Pills of ferrous carbonate in 15 mils dil. H2SO4; add 85 mils distilled water. Titrate immediately with tenth-normal K2Cr2O7 V. S., using K4Fe(CN)6 as indicator. Each mil of 'titer used corresponds to 0.011584 Gm. FeCO3.

What is the strength of your sample ?................................................................................................................................