101 



attention has of late been bestowed upon the chemical CASE 

 constituents of these oils and they have been found to 53. 

 vary greatly in character. Their commercial value 

 depends upon the percentage of Eucalyptol they contain. 



Note in the last compartment mounted specimens of 

 the flowers^ and fruits of E. macrocarpa^ Hook. Also 

 road paving blocks of. Karri {E. diversicolor, F. Muell.), 

 and of Jarrah {E. marglnaia^ Sm.), two of the most 

 important timber trees of Australia. The Karri is 

 described as the finest and most graceful tree of the 

 Australian forests. It is strictly confined to the South- 

 western Division of Western Australia. An average tree 

 attains a height of 2<^>0 feet with a diameter of 4 feet near 

 the base ;• it is not unusual, however, to meet with trees 

 300 feet high. The timber is hard, heavy, elastic and 

 tough, red in colour, and is very similar in appearance to 

 Jarrah but not so easily worked. Its chief uses are for 

 bridge planking, shafts, spokes, felloes, wagon work, 

 beams, mining timber and paving blocks. The Jarrah is 

 the principal timber tree of Western Australia, found only 

 in the South-western Division of the Colony. The 

 average height is 90 to 100 feet with a diameter of 2^ to 

 3^ feet at the base. When thoroughly seasoned the wood 

 weighs 60 lbs. per cubic foot, is red in colour, takes a good 

 polish and is comparatively easily worked. Some of its 

 principal uses are for piles, jetties, bridges, boat-building, 

 furniture, railway sleepers and paving blocks. Fine 

 Specimens of these timbers will be found in Museum 

 No. III. 



This case contains woods and other products of unde- CASE 

 termined species of Eucalyptus, also weapons and other 54. 

 articles made by the aborigines. 



No. 270. Bark of a EucalyiJtus, upon the inner 

 surface of which drawings have been made by tlie 

 aborigines of Victoria. 



In the first compartment of this case note specimens of CASE 

 the wood, and essential oil distilled from the leaves of the 55. 

 Scrub or Native Myrtle of Queensland (Backhousia 

 citriodora, F. Muell.). The lemon-scented oil is used in 

 Ausiralia as a perfume for soap. Small quantities of it 

 have recently been imported into this country as a 

 perfume. 



