Naturalisation in Extra-Tropical Countries. 169 



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 calopJerlla, E. Brown. 



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

 Gumtree. More umbrageous than most Eucalypts and of com- 

 paratively rapid growth. In its native forests it has quite the 

 aspect of the Eastern Bloodwood-trees. It succeeds well at the 

 city of Algiers [Dr. Bourlier], also suited for mountainous regions 

 of Ceylon. The wood is almost destitute of kino, 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 

 implements ; it is strong and light, but not durable underground. 

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

 the seed-vessels of this and perhaps all other Eucalypts can be 

 used for the same purpose. The stem of this tree may occasionally 

 be observed to 10 feet in diameter ; it is the only tree in West- 

 Australia, which yields copiously the fluid and indurating 

 Eucalyptus-kino ; this is soluble in cold water to the extent of 70 

 to 80 per cent. This species will only endure a slight frost ; its 

 flowers are much frequented by the honey-bee. The kino-fluid 

 from this tree might be used as a protection of wood, and perhaps 

 other substances against decay. 



Eucalyptus capitellata, Smith. 



One of the Stringy bark-trees of South-Eastern Australia, 

 extending into the dry mallee-country, attaining occasionally a 

 height of 200 feet. The timber is principally used for fence-rails, 

 shingles and rough building purposes. Kino soluble in water as 

 well as in alcohol. This species might with advantage be raised on 

 wet sandy land. Produces seed already when quite young. 



Eucalyptus citriodora, Hooker.* 



Queensland. Generally on sterile stony ridges. A handsome 

 slender tree with a smooth white bark, supplying a useful timber, 

 especially for piles and girders. Succeeded remarkable well at 

 Lucknow [Ridley], also at Zanzibar, where it grows at a tremen- 

 dous rate [Sir J. Kirk], and thrives also in Bengal. It is this 

 species, which grows so well on the hot plains of the Magdalena 

 River, attaining a height of 20 feet in two years, in regions subject 

 to protracted drought [Dr. Masters]. According to notes of the 

 late Mr Thozet, a trunk 40 feet long and 20 inches in diameter 

 broke after a flexion of 17 inches, under a pressure of 49 tons. 

 This species combines with the ordinary qualities of many 

 Eucalypts the advantage of yielding from its fresh leaves a rather 

 large supply of volatile oil (slightly more than one per cent.) of 

 excellent lemon-like fragrance, in which respect it has, among 



