This section is from the book "Botanic Drugs Their Materia Medica, Pharmacology and Therapeutics", by Thomas S. Blair. Also available from Amazon: Botanic Drugs, Their Materia Medica, Pharmacology and Therapeutics.
The oil is official in several pharmacopeias. It is derived from Melaleuca leucadendron. It contains 60 per cent of cineol. For internal use as a balsamic stimulant, the British Pharmacopeia spirit may be used in doses of 5 to 20 minims. Formerly the oil was used as an application to frost-bite.