102 FOREST CULTURE AND 
Tea, precisely as our drier ridges are verdant with the 
vine. Erythroxylon-Coco, the wondrous stimulating 
plant of Peru, should be raised in the mildest and 
most sheltered forest glens, where the stillness of the 
air excludes the possibility of cutting frosts. Hop, 
cultivated as a leading industry in Tasmania since a 
quarter of a century, will also take a prominent place 
_ on the brooks of our mountains, Peru-bark trees of 
various kinds should in spots so favored be subjected 
to culture trials. How easily could any swampy de- 
pression, not otherwise readily of value, be rendered 
productive by allowing plants of the handsome New 
Zealand flax lily quietly to spread as a source for fu- 
ture wealth. How far the demand of material for 
industrial purposes may quickly exceed the supply 
may be strikingly exemplified by the fact that hun- 
dreds of vessels are exclusively employed for bringing 
the Esparto grass (not superior to several of our most 
frequent sedges) from Spain to England, to augment 
the supply of rags for the endless increasing require- 
ments of the paper-mills. Conversion of manifold 
material, even saw-dust, into paper, is carried on to a 
vast extent ; a multitude of samples placed here be- 
fore you will help to explain how wide the scope for 
paper material may extend. But the factories want 
material, not only cheap, but readily convertible, and 
adapted to particular working. 
In all these selections, a few glances through the 
microscope, and the result of a few chemical reactions 
taught in this hall, may at once advise the artisan in 
his choice. 
Phytologic inquiry is further to teach us rationally 
the nature of maladies to which plants aressubject, 
