Strychnine, 1 1/4 grains.

Elixir of phosphate of cinchonidine, 16 fluidounces.

Phosphoric acid (U. S. P., 1872), a sufficient quantity.

Triturate the powdered strychnine in a mortar with sufficient phosphoric acid to effect its solution; then add the elixir of cinchonidine, and filter if necessary.

Each fluidrachm (teaspoonful) of the finished elixir contains of phosphates of cinchonidine and strychnine an amount which is equivalent to one grain of cinchonidine and one-hundredth of a grain of strychnine.