DESCRIPTION OF NATURAL ORDER. 



This is so well and fully given in Bentham and Hooker's " Genera 

 Plantarum/' Vol. Ill, p. 420, that it would be superfluous to repeat it here. 



FORESTRY. 



In this direction the commercial importance of the genera might j)erhaps be 

 arranged in the following order : — 



1. Callitris, principally for timber, bark, oil, and sandarac (resin). 



2. Armicaria, principally for timber, and oleo-gum-resin. 



3. Agathis, principally for timber, " oil of turpentine," and resin. 



4. Athrotaxis, principally for timber and oil. 



5. Dacrydium, principally for timber and oil. 



6. Phyllocladus, principally for timber and bark. 



7. Podocarpus, principally for timber. 



CHEMICAL CONSTITUENTS. 



The oils, oleo-resins, oleo-gum-resins, gums, and resins, whilst corresponding 

 in some respects to those of non- Australian Pines, yet present some new and most 

 interesting differences in chemical characters, which are fully detailed under 

 the respective species. 



