242 APPENDIX. 



hill, valley, and brush lands, where cultivation was impracti- 

 cable ; the results have been promising, although, like the 

 eucalypti, a measurable and perhaps profitable increment in 

 growth has followed the cost of cultivation. 



The most valuable species i.e., the one richest in tannin is 

 the Acacia pycnantha. It is, however, more sensitive to cold 

 than some others, and hence properly restricted to the thermal 

 section of the coast. 



The next in value. A. decurrens, and its immediate congener, 

 A. moligsima, are suitable for a very wide range, thriving in 

 the littoral regions, as well as for one hundred miles inland, 

 and for a length of seven hundred miles north and south. 



A. melanoxylon is less valuable for its tan-bark, but makes a 

 larger tree (twenty metres), and furnishes a valuable cooper's 

 wood and the best fuel. It requires, perhaps, more moisture 

 and a better soil than the other species to obtain its maximum 

 growth. Incidentally it is compact and symmetrical in habit, 

 hence serving well for wind-breaks or street-planting. 



Casuarinas of different sorts have been fairly tried. Among 

 them C. stricta, C. teniusimus, C. suberosa, and C. equisitaostolia. 

 All are rapid growers and hardy, also adapted to arid sites. 



The last-named has given larger evidence of versatile adapt- 

 ability to our requirements of soil and climate. 



Allied to the acacias we have a tree of phenomenally rapid 

 growth, and conformable to waste lands. It is Albizzia lo- 

 phantha. It is of no possible economic value except for the 

 marvellous rapidity with which it furnishes forest cover, and 

 is thus rendered available for furnishing a quick and short- 

 lived protection to coniferous plantations. 



Eastern United States Silva have been but sparingly at- 



