EUCALYfTUS TEfiES. 127 



deals, select tanning material, cork, pitch, turpentine, 

 and many other products be gained far more readily 

 there than elsewhere in Victoria, from sources ren- 

 dered our own? Ought we not to test in these val- 

 leys how far the Sisso, the Sal, the Teak, may prove 

 hardy, and as important here as our Blackwood and 

 Eucalypts abroad? Or shall I enumerate all the orna- 

 mental woods for furniture, machinery, instruments, 

 which form an endless array of genera, and species 

 might be chosen as introducable, indeed, from most 

 lands ; many of these, perhaps, to And an asylum in our 

 mountains before — like in St. Helena and other isolated 

 spots — the remarkable and endemic trees are swept 

 by man's destructive agency from the face of the 

 globe ? Shall I speak in detail of the trees which 

 yield dyes, and many medicinal substances ? If the 

 Turkey Box - tree should continue the best for the 

 wood-engraver, it would, in these valleys, assume its 

 largest dimensions. I do not hesitate in affirming 

 that out of ten thousand kinds of trees, which proba- 

 bly constitute the forests of the globe, at least three 

 thousand would live and thrive in these mountains 

 of ours ; many of them destined to live through cen- 

 turies, perhaps, not a few through twice a thousand 

 years, as great historic monuments. Within the 

 railway-fences, hitherto in this respect unused, trees 

 might be raised as materials for restoring, locally, the 

 sleepers, posts, and rails, prior to their decay. The 

 principles of physiology, the revelations of the micro- 

 scope, aud the results of chemical tests guide us, not 

 only in our selections of the trees, but often teach us, 

 beforehand, the causes and reasons of durability or de- 

 cay. 



