132 Select Plants for Industrial Culture 



The proportion of oil varies also somewhat according to locality and 

 season. E. restrain, though one of the poorest in oil, is neverthless 

 important for malaria-regions, as it will grow well on periodically 

 inundated places and even in stagnant water not saline. According 

 to Mr. Osborne's experiments initiated by myself, Eucalyptus-oils 

 dissolve the following, among other substances, for select varnishes 

 and other preparations: camphor, pine-resins, mastic, elemi, sandarac, 

 kauri, dammar, asphalt, xanthorrhosa-resin, dragon's blood, benzoe, 

 copal, amber, anime, shellac, caoutchouc, also wax, but not gutta- 

 percha. These substances are arranged here in the order of their 

 greatest solubility. The potash obtainable from the ashes of various 

 Eucalypts varies from 5 to 27 per cent. One ton of the fresh foliage 

 of E. globulus yields about 8^ Ibs. of pearl-ash ; a ton of the green 

 wood, about 2J Ibs.; of dry wood, about 4| Ibs. For resins, tar, 

 acetic acid, tannin and other products and educts of many Eucalypts, 

 see various documents and reports of the writer, issued from the 

 Melbourne Botanic Garden. 



Eucalyptus Baileyana, F. v. Mueller. 



South-Queensland and northern part of New South Wales. A tree 

 to about 100 feet high; bark remarkably tenacious (Bailey). The 

 timber splits easily, yet is tough and durable, thus locally used for 

 fence-posts and similar purposes (A. Williams). This species, unlike 

 most of its congeners, can be grown to advantage on sandy soil. 

 Branches more spreading and foliage more dense than of most other 

 Eucalypts. 



Eucalyptus botryoides, Smith.* 



From East-Gippsland to South-Queensland. Vernacular name 

 Bastard-Mahogany, and a variety called Bangalay, the latter generally 

 found on coast-sands. One of the most stately among an extensive 

 number of species, remarkable for its dark-green shady foliage. It 

 delights in river-banks. Stems attain a height of 80 feet without a 

 branch and a diameter of 8 feet. The timber usually sound to the 

 centre, adapted for water-works, wagons, particularly for felloes, also 

 knees of boats. Posts formed of it are very lasting, as no decay was 

 observed in fourteen years ; it is also well adapted for shingles. The 

 Rev. Dr. Woolls, Mr. Kirton and Mr. Reader all testify to its general 

 excellence. 



Eucalyptus calophylla, R>. Brown. 



South-Western Australia, where it is vernacularly known as Red 

 Gumtree. More umbrageous than most Eucalypts and of comparatively 

 rapid growth. In its native forests it has quite the aspect of the 

 eastern Bloodwood-trees. The wood is almost destitute of resin when 

 grown on alluvial land, but not so when produced on stony ranges. 

 It is preferred to that of E. marginata and E. cornuta for rafters, 

 spokes and fence-rails, also used for handles and agricultural imple- 

 ments ; it is strong and light, but not durable underground. The bark 

 is valuable for tanning, as an admixture to Acacia-bark; the seed- 



