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.
This is obtained from the leaves and tops of Melissa officinalis, Linne, Melissa is also called balm, lemon balm. The plant is indigenous to Western Asia and Southern Europe, has become naturalized in the United States, and is not infrequently cultivated. By distillation a volatile oil is obtained, which is colorless or yellowish, has a specific gravity of about 0.890, dissolves in about five parts of alcohol, specific gravity 0.850, and has an agreeable aroma. It has not much application yet, but may enter advantageously into compound flavors.