RESULTS. 



Botanically the results of the research were generically greater than those 

 specifically, for the peculiarities of structure were found to be quite characteristic 

 ofj and differing considerably from, those of cognate genera. 



Chemically and economically they promise to be of great importance, 

 and to open up new fields for commercial enterprise. 



Vide detailed results infra. 



SYSTEMATIC CLASSIFICATION ADOPTED. 



A classification similar to that laid down by us in our work on "The 

 Eucalypts and their Essential Oils," has been followed in this work, and the 

 taxonomic status of the species here recognised is supported by, — 



1. A field knowledge of the trees. 



2. Morphology of fruits, leaves, inflorescence, and their functions. 



3. Anatomy of these organs. 



4. Anatomy, nature, and character of the timber and bark. 



5. Chemical properties and physical characters of the oils, gums, oleo- 



resins, oleo-gum-resins, resins, tans, &c., and other evidences that 

 will assist in establishing natural affinities or differences in species. 



Species so founded give practically constant results, and preserve specific 

 characters throughout their geographical distribution, and so we here again 

 record our faith in taxonomic work based on such principles. 



It may be noted that no reference is made in the above to the distribution of the resin 

 cavities, as Engelman and others have done ; these, however, were found to occur irregularly in 

 the leaf tissue, so that they were practically useless for systematic classification. 



