49 



Eucalyptus citriodora, Hooker. 



Queensland. It combines with the ordinary qualities of many Eacalypts 

 the advantage of yielding from its leaves a rather largo supply of 

 volatile oil of excellent lemon-like fragrance. 



Eucalyptus diversicolor, F. v. Mueller. 



The Karri of S. W. Australia. A colossal tree, exceptionally reaching 

 to the height of 400 feet, with a proportionate girth of the stem. The 

 timber is excellent. Fair progress of growth is shown by the young 

 trees, planted even in dry exposed localities in Melbourne. The shady 

 foliage and dense growth of the tree promise to render it one of our 

 best for avenues. In its native localities it occupies fertile, rather humid 

 valleys. 



Eucalyptus globulus, Labi]]. 



Blue Gumtree of Victoria and Tasmania. This tree is of extremely 

 rapid growth and attains a height of 400 feet, furnishing a first-class 

 wood ; shipbuilders get keels of this timber 120 feet long ; besides this 

 they use it extensively for planking and many other parts of the ship, 

 and it is considered to be generally superior to American Rock Elm. A 

 test of strength has been made between some Blue Gum, English Oak, 

 and Indian Teak. The Blue Gum carried 14 lbs. weight more than the 

 Oak and 17 lbs. 4ozs. more than Teak upon the square inch. Blue Gum 

 wood, besides for shipbuilding, is very extensively used by carpenters 

 for all kinds of out-door work, also for fence rails, railway sleepers — 

 lasting about 9 years, — for shafts and spokes of drays, and a variety of 

 other purposes. 



Eucalyptus gomphocephala, Candolle. 



The Tooart of S. W. Australia ; attains a height of 50 feet. The wood 

 is close-grained, hard and not rending. It is used for shipbuilding, 

 wheelwright's work and other purposes of artisans. 



Eucalyptus marginata, Smith* 



The Jarrah or Mahogany tree of S. W. Australia, famed for its inde- 

 structible wood, which is attacked neither by Chelura nor Teredo nor 

 Termites, and therefore so much sought for jetties and other structure* 

 exposed to sea-water, also for any underground work, and largely 

 exported for railway sleepers. Vessels built of this timber have been 

 enabled to do away with all copperplating. It is very strong, of a close 

 grain and a slightly oily and resinous nature ; it works well, makes a 

 fine finish, and is by shipbuilders here considered superior to either 

 Oak, Teak, or indeed any other wood. The tree grows chiefly on iron- 

 stone ranges. At Melbourne it is not quick of growth, if compared to 

 our Blue Gum (JEuc. globulus, Lab.) or to our Stringybark (£. obliqua, 

 l'JHer.), but it is likely to grow with celerity in our ranges. 



Eucalyptus rostrata, Schlechtendal. 



The Eed Gum of Victoria, South Australia and many river flats in the 

 interior of the Australian continent. Although a native tree of this 

 colony, it has been introduced into this list on account of its wood 

 being of extraordinary endurance under ground, and for this reason so 

 highly valued for fence-posts, piles and railway sleepers ; for the latter 

 purpose it will last at least a dozen years, and, if well selected, much 

 longer. It is also extensively used by shipbuilders— for main stem, stem 

 post, inner post, dead wood, floor timbers, futtocks, trausomes, knight 

 head, hawsepieces, cant, stern, quarter and fashion timber, bottom 

 planks, breasthooks and riders, windlass, bowrails, &c. It should be 

 steamed before it is worked for planking. Next to the Jarrah from 

 West Australia this is the best wood for resistiug the attacks of sea- 

 worms and white ants. For other details of the uses of this and other 

 native trees refer to the Reports of the Victorian Exhibitions of 1S02 aud 



