Naturalisation in Extra-Tropical Countries. 147 



New Zealand for harvesting the seeds. The nutritive power of 

 this grass is of first class. The chemical analysis, made very late 

 in spring, gave the following results : Albumen 1'87, gluten 7*11, 

 starch 1*05, gum 4'47, sugar 3'19 per cent. [Von Mueller and 

 Hummel]. 



Daetylis litoralis, Willdenow. (Aeluropus laevis, Trinius.) 



From the Mediterranean sea to Siberia. This stoloniferous grass 

 can be utilized for binding coast-sands ; but it is of greater import- 

 ance still in sustaining a Kermes-insect (Porphyrophora Hamelii), 

 which produces a beautiful purple dye [Simmonds], 



Dalberg-ia latifolia, Roxburgh. 



India, up to cool but not cold regions. A deciduous tree, attain- 

 ing a height of 80 feet. The wood tough and heavy, in local request 

 for ornamental furniture, yokes, wheels, ploughs, knees of boats ; 

 its color from nut-brown to dark-purplish, streaked and spotted 

 with lighter hues [Brandis, Gamble]. It has fetched as much as 

 13 10s. per ton in England [Watt]. 



Dalberg-ia IVIelanoxylon. Guillemin and Perrottet. 



Tropical Africa, extending to Southern Egypt. A small tree 

 with spiny branches ; the wood described variously as blackish and 

 purplish ; according to Colonel Grant used for arrow- tips, wooden 

 hammers and other select implements. 



Dalberg-ia BZiscolobiuxn, Bentham. 



Southern Brazil. This tree supplies a portion of the Jacaraiida- 

 wood [Tschudi]. 



Dalberg-ia nigra, Aliemao. 



Brazil, down to the Southern Provinces. A tall tree, likely to 

 prove hardy in warmer extra-tropic regions. It yields a portion of 

 the Jacaranda- or Palisander- Wood, also Caviuna-Wood, which for 

 rich furniture have come into European use. Several Brazilian 

 species of Macha3rium afford, according to Saldanha da Gama, a 

 similar precious wood, also timber for water-works and railway- 

 sleepers, particularly M. incorruptibile (Aliemao), M. legale and 

 M. Allemai (Bentham). 



Dalberg-ia Sissoo, Roxburgh.* 



The Indian Sissoo-tree, extending to Afghanistan, ascending to 

 elevations of 5,000 feet, attaining a height of 80 feet. It may be 

 worthy of test, whether in localities almost free of frost, particularly 

 along sandy river-banks, this important timber-tree could be 

 naturalised, the Sissoo bearing occasional frosty cold better than 

 the Sal. Brandis found the transverse strength of the wood 

 greater than that of teak and sal ; it is very elastic, seasons well, 



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