This section is from the book "A Treatise On Beverages or The Complete Practical Bottler", by Charles Herman Sulz. Also available from Amazon: A Treatise On Beverages.
Take eight ounces finely sliced vanilla beans, one and one-half ounces of bruised cinnamon, and one and one-half ounces of cassia. Macerate in a mixture of two pints of alcohol, and two pints of water for twenty-four hours on a water bath, applying gentle heat. Let cool, and when cold filter through filtering paper, and preserve the liquid in well-stoppered bottles.