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;
Acetate of potassium, 640 grains.
Elixir of buchu, a sufficient amount.
Dissolve the acetate of potassium in enough elixir of buchu to produce sixteen fluidounces.
Each fluidrachm represents five grains of acetate of potassium.