Fluid extract of columbo, 2 fluidounces.

Simple elixir, 14 fluidounces.

Carbonate of magnesium, a sufficient quantity.

Triturate the fluid extract of columbo in a capacious mortar with carbonate of magnesium in amount sufficient to form a creamy mixture, then gradually add the simple elixir, stirring well, and filter.

Each fluidrachm of the finished elixir represents seven and one-half minims of fluid extract of columbo.