in Extra-Tropical Countries. 141 



did particularly well at George-town in British Guiana, growing at 

 a rate from 10 to 18 feet in a year while in a young state (Jenman). 



Eucalyptus microtheca, F. v. Mueller. 



Widely dispersed over the most arid extra-tropical as well as 

 tropical inland-regions of Australia. Withstood unscorched a fre- 

 quent heat of 156 F. in Central Australia. One of the best trees 

 for desert-tracts; in favorable places 150 feet high. Wood brown, 

 sometimes very dark, hard, heavy and elastic; it is prettily marked, 

 hence used for cabinet-work, but more particularly for piles, bridges 

 and rail way- sleepers (Rev. Dr.. Woolls). 



Eucalyptus obliqua, 



The ordinary Stringybark-tree of Tasmania, generally designated 

 Messmate-tree in Victoria, attaining a height of 300 feet, with astern 

 more than 10 feet in diameter, growing mostly in mountainous 

 country. The most gregarious of all Eucalypts from Spencer's Gulf 

 to the southern parts of New South Wales, and in several varieties 

 designated by splitters and other wood-workers by different names. 

 Most extensively used for cheap fencing rails, palings, shingles, and 

 any other rough wood-work, not to be sunk underground, nor 

 requiring great strength or elasticity. The bulk of wood obtained 

 from this tree in very poor soil is perhaps larger than that of any 

 other kind, and thus this species can be included even in its native 

 country, where it is naturally common and easily re-disseminated, 

 among the trees for new forest-plantations in barren woodless tracts, 

 with a view of obtaining a ready and early supply of cheap and 

 easily fissile wood. The young trees are sometimes used for tele- 

 graph-poles. The fresh bark contains from 11 to 13 J per cent, kino- 

 tannic acid. 



Eucalyptus ochrophloia, F. v. Mueller. 



Arid interior of sub-tropic Eastern Australia, on ground subject to 

 occasional floods. A tree seldom over 30 feet high. Wood tough, 

 serviceable for slabs, rails and rafters, but not lasting underground. 

 A tree recommendable for hot and dry regions. 



Eucalyptus odorata, Behr. 



The Peppermint-tree of South-Australia. Reaching 70 feet in 

 height, the stem 2J feet in diameter. Timber hard, very durable; 

 used for sleepers, posts and piles (J. E. Brown). The tree follows 

 the limestone-formation, but occurs also in clayey loam; 1,000 Ibs. of 

 foliage gave 112 oz. of oil (Nitschke). 



Eucalyptus oleosa, F. v. Mueller. 



One of the smaller Eucalypts known as Mallee, extending from 

 East- to West- Australia through the desert-regions. The essential oil, 

 in which the foliage of this species is comparatively rich, dissolves 

 india-rubber without heat, according to Mr. Bosisto. It is also one 

 of the best solvents for amber and other fossil resins. The variety 



