This tree is also a Queensland species and yields an abundance of oil of quite a remarkable character for a Eucalyptus species, as it consists very largely of citral and limonene. The oil, in constitution, has thus quite a strong resemblance to lemon oil, and it seems reasonable to suppose, that when properly prepared for market it will become in favour as a flavouring agent, and in many ways take the place of lemon oil. Evidence is wanting as to its power of reproduction under cultivation, as it has not been planted to any extent in the Southern States. The species is, however, a very promising one, as the yield of oil is so great, and from cultivated material this should be produced at a lower price than lemon oil. The species may thus be considered as one of the many promising Eucalypts for essential oil production, and to be worthy of industrial effort in the direction of its cultivation.

Cineol Oils

The present demand for the richer cineol Eucalyptus oils can be met very largely from species growing naturally in Australia, although for some time past the request for oils of this character has far exceeded the supply. The question of systematically cultivating the more promising species for cineol oil production, therefore, merits some consideration, in order to overcome certain disabilities at present operating, such as distance, distribution, and labour.

In countries outside Australia, E. globulus and a few other oil-yielding Eucalypts have been cultivated, primarily of course for timber, so that the oil produced from these trees has hardly been of much commercial importance. The best and most prolific oil-yielding species have not, until quite recently, attracted much attention in other countries, so that Eucalyptus oil production may be considered as essentially an Australian industry, the present position of which is such as to be considered worthy of every support.