464 QUEENSLAND AGRICULTURAL JOURNAL. [1 Dec., 1897. 
Camphor. 
Tur White Camphor of commerce is obtained from the Cinnamomum 
camphora by sublimation of the leaves and wood. ‘This is also called Formosa 
and Japanese camphor. Jt is the most important as being the commercial 
form of camphor. A decoction is made leat the root, wood, and leaves 
of the tree which is also called the Camphor Laurel. Next in importance 
comes the Barus camphor (from Barus, a town in Sumatra), also known 
as Kapur Barus, Borneo, and Malay camphor. The product is obtained 
as coarse crystals formed entirely in the stems of the Dryobalanops 
camphora, Colebr. Dryobalanops aromatica, Gacrtn., is a tree closely 
allied to the Indian Sal, and therefore a member of the natural order 
Dipterocarpex. It is found in British Sumatra, and the natives cut it up 
into small pieces to find the crystals of camphor. The crystals found exist in 
concrete masses, and occupy longitudinal cavities in the heart of the tree from 
1 foot to 1feetlong. The old trees are generally the most productive, ard an 
average tree is said to produce 11 Jb. weight. The camphor is also found 
underneath the bark of the Dryobalanops aromatica. A more or less quantity 
‘of essential oil is also found in the cavities of the wood. ‘The value of the 
produce of the D. camphora is 80 rupees per lb., whilst the ordinary kind 
imported from China is worth only from 40 to 65 rupees. As much as 5 
gallons of oil called Borneene is often taken from one tree. 
The camphor oil of Formosa is quite different. It is a brown oil, which 
drains from the cases containing crude camphor. It smells like sassafras, and 
from this so-called oil, or rather solution, camphor is precipitated when the 
temperature of the liquid falls. 7 
The camphor-trees, so many of which grace our gardens, parks, and streets, 
are Cinnamomum camphora, and are very easily grown, as they adapt themselves 
to most soils and climates. 
