Naturalisation in Extra-Tropical Countries. 183 



for counteracting the effect of opium ; they seem also to prevent sea- 

 sickness. Recommended recently as an antidote to snake-poison. 

 The moderate consumption of this plant seems to leave no ill effect. 

 The Peruvians mix the leaves with the forage of mules, to increase 

 their power of enduring fatigue. A good harvest produces about 

 900 Ibs. on an acre [Dr. Weddell]. The total annual production is 

 about 40,000,000 Ibs. valued at 2,000,000 [Dyer] all consumed in 

 South- America. Whether any of the many other species of 

 Erythroxylon possesses similar properties in the same proportion has 

 as yet only been partially ascertained. 



Eucalyptus Abergiana, F. v. Mueller. 



Northern Queensland. A stately tree, with unusually spreading 

 branches of dense foliage. The quality of its timber has remained 

 hitherto unknown, but the species will probably prove one of the 

 most suitable among its congeners for tropical countries. 



Eucalyptus alba, Reinwardt. 



Timor and North- Australia, also New Guinea. This species 

 proved well adapted for the lowland-clime of Ceylon, growing fast 

 and seeding freely [Dr. Henry Trimen]. 



Eucalyptus amygdalina, La Billardiere.* 



South-Eastern Australia. Vernacularly known as Brown and 

 White Peppermint-tree, Giant-Gumtree and as one of the Swamp- 

 Gumtrees. The variety regnans as Victorian Blackbutt and Moun- 

 tain-Ash. In sheltered springy forest-glens attaining exceptionally 

 to a height of over 400 feet, there forming a smooth stem and broad 

 leaves, producing also seedlings of a foliage different from the 

 ordinary form of E. amygdalina, which occurs in more open country, 

 and has small narrow leaves and a rough brownish bark. The 

 former species or variety, which has been called Eucalyptus reg- 

 nans, represents probably the loftiest tree on the globe. Mr. J. 

 Hollo of Tarragon measured a tree, which was 410 feet high. Another 

 tree in the Cape Otway-ranges was found to be 415 feet high and 

 15 feet in diameter, where cut in felling, at a considerable height 

 above the ground. Another tree measured 69 feet in circumference 

 at the base of the stem ; at 12 feet from the ground it had a diameter 

 of 14 feet ; at 78 feet a diameter of 9 feet ; at 144 feet a diameter 

 of 8 feet, and at 210 feet a diameter of 5 feet. Other trees are 

 known with a stem-circumference of 66 feet at 5 feet from the 

 ground. Prof. Wilson and Colonel Ellery obtained at Mount Sabine 

 a measurement of 21 feet 8 inches in diameter of a stem, where cut, 

 the length being 380 feet. Colonel Ellery had repeatedly reports 

 of trees seven axe-handles in diameter, and he met a tree on Mount 

 Disappointment with a stem diameter of 33 feet at about 4 feet from 

 the ground. Similar colossal dimensions are recorded from 



