This section is from the "Elixirs And Flavoring Extracts. Their History, Formulae, & Methods of Preparation" book, by John Uri Lloyd. Also available from Amazon: Elixirs and flavoring extracts,: Their history, formulae, and methods of preparation;
Solution of iodide of arsenic and mercury (Donovan's solution), 256 minims.
Simple elixir, a sufficient quantity.
Mix the solution of iodide of arsenic and mercury with enough simple elixir to produce sixteen fluidounces.
Each fluidrachm of the finished elixir contains two minims of solution of iodide of arsenic and mercury. Dose, one fluidrachm (teaspoonful), increased carefully to two or three fluidrachms, if necessary.