1 1 1 



fhe yield oi oil from E. citriodora from naturally grown material is aboul 

 0'7 per cent Eor leave: and terminal branchlets, and the product is in considerable 

 demand and sells a1 a high price. The species thus gives promise oi success ii 

 it were systematically cultivated, and it is evident that it must be inure 

 satisfactorj to collect the material for distillation from cultivated plants than 

 from big trees 



ll< \1 YPTl'S STAIGERIANA. 



This tree is also •■ Queensland species and yields an abundance ol oil oi 

 quite a remarkable character for a Eucalyptus species, as i1 consists very largely 

 oi citral and limonene. The oil, in constitution, has thus quite a strong 

 resemblance to lemon oil, and it seems reasonable to suppose, that when 

 erly prepared Eor market it will become in favour as a flavouring agent, 

 and in many ways take the place oi lemon oil. Evidence is wanting as to its 

 power oi reproduction under cultivation, as it has not keen planted to any 

 extent in the Southern States. The species is, however, a very promising one, 

 as the yield oi oil is so great, and from cultivated material this should be 

 produced at a lower price then lemon oil. The species may thus be considered 

 as one o| the many promising Eucalypts lor essential oil production, and to he 

 worthy of industrial effort in the direction ol its cultivation. 



Cincol Oils. 



Thh 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 keen 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 he considered as essentially an Australian industry, the 

 ;ent position ol winch i> such as to be considered worthy ol every support. 



/ UCALYPTUS SMI run. 



The rapidity oi growth shown by cultivated trees of some of the cineol 



oil-producing species is extraordinary, and this has often been pointed 



out. particularly with E. globulus. We have given some attention to tins 



matter in connection with the excellent cineol oil-bearing species E. Smithii, 



the results so far obtained are recorded herewith. 



The natural habitat oi this species is on the highlands, at an altitude oi 



aboul _■< to [ooo feet, ami it mighl be thought perhaps that if planted at sea 



level, some diff< r( m es in the rapidity oi growth as well as in the composition "i 

 the ml mighl 1 e observed. These changes, however, have not eventuated, a- the 

 results obtained with a cultivated tree, grown neai Sydney, practical^ at sea- 

 el gave evidence oi greal stability in both directions. 



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