308 PROCEEDINGS OF SECTION D. 



than seven-eighths of the 60 trees described in this paper are pale 

 coloured. The red timbers are, therefore, comparatively few, and 

 number less than a dozen. 



As this paper claims to be a Census only, the qualities and textures 

 of the woods are not specifically described, but the following divisions 

 may be useful for a general classification of the timbers : — 



Hardwoods — 



Heavy — 



(a) Red-coloured Timbers.- — E. corymbosa, E. botryoides, E. 



polyanthema, E. rostrata, E. tereticornis, E. longi- 



folia, E. side roxy Ion. 

 (6) Pale-coloured Timbers. — E. goniocalyx, E. hemiphloia, E. 



melliodora, E. Bosistoana, E. albens, E. Fletcheri, 



E. Behriana. 



Medium. — ■ 



Pale-coloured. — E. paludosa, E. globulus, E. pilularis, E. 

 amygdalina, E. Muelleriana, E, eugeuioides, E. 

 capitellata, E. macrorrhyncha. 



Light. — 



Pale-coloured. — E. Delegatensis, E. regnans, E. obliqua, E. 

 piperita. 



(5) Essential Oils. 



A full description of these will be found in the Research on the 

 Eucalypts by myself and colleague, Mr. H. G. Smith, but it might be 

 mentioned en passant so as to make this paper complete, for the use of 

 technologists, that the proportion of good commercial oils is equal 

 to that of any other State. As, however, several results are not to be 

 found in that work, further investigations having been undertaken 

 since its publication, a summary is given at the end, showing the main 

 constituents of the oils of all the species. 



Two of the best for medicinal purposes, that is, of Pharmacopoeia 

 standard, are found here, viz., E. Smithii and E. polybractea, whilst 

 the world-famed species in this direction, E. globulus, is at least fairly 

 plentiful. 



Since the discovery of the value of Phellandrene oils for mineral 

 sulphide separation, the demand for these oils have considerably 

 increased, and Victoria is in the happy position of being able to materially 

 assist in supplying that want, for some of the best yielding Phellandrene 

 oils are found in this State, for example, E. amygdalina, E. dives, 

 E. radiata, E. Delegatensis, and several of a lesser yield. 



