Fluid extract of corydalis, 1 fluidounces.

Fluid extract of stillingia, 1 fluidounces.

Fluid extract of prickly-ash berries, 1/2 fluidounces.

Fluid extract of blue flag-root, 1/2 fluidounces.

Alcohol, 2 fluidounces.

Iodide of potassium, 384 grains.

Simple elixir, carbonate of magnesium, of each a sufficient quantity.

Triturate the mixed fluid extracts in a capacious mortar with carbonate of magnesium in amount sufficient to form a creamy mixture, then gradually add simple elixir enough to produce sixteen fluidounces, stirring well, and filter. Lastly, mix the filtrate with the alcohol, and dissolve the iodide of potassium in the liquid.

Each fluidrachm of the finished elixir represents the proportion which the menstruum will dissolve of about four minims each of fluid extract of corydalis and of stillingia, about two minims of fluid extract of prickly-ash berries, and two minims of fluid extract of blue flag-root; together with three grains of iodide of potassium.

We have little faith in the power of the above menstruum to dissolve the desirable principles of the drugs, corydalis, perhaps, excepted; but the elixir may be therapeutically worthy, since iodide of potassium alone is valuable.

The above formula is nearly identical with that offered by the joint committee of the National College of Pharmacy and the Medical Society of the District of Columbia.