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;
Fluid extract of sumbul, 2 fluidounces.
Elixir of valerianate of ammonium, 14 fluidounces
Carbonate of magnesium, a sufficient quantity.
Triturate the fluid extract of sumbul in a capacious mortar with carbonate of magnesium in amount sufficient to form a creamy mixture, then gradually add the elixir of valerianate of ammonium, stirring well, and filter.
Each fluidrachm of the finished elixir represents two grains of valerianate of ammonium. and according to this formula each fluidrachm should contain the active principles of seven and one-half minims of fluid extract of sumbul. But, as a matter of fact, that amount will not dissolve in that quantity of the menstruum, the excess remaining in the filter paper.