TIMBERS. 551 
382. Grevillea Hilliana, #.v.d/,, N.O., Proteacee, B.FI., v., 463. 
“Silky Oak.” ‘“ White Yiel Yiel.” 
Timber hard, durable, and beautifully grained; used for 
coopers’ work, cabinet-work, veneers, etc. Diameter, 2 to 3ft.; 
height, 50 to 6oft. 
Northern New South Wales and Queensland. 
383. Grevillea polystachya, R. Br., (Syn. G. parallela, Knight ; 
G. polybotrya, F.v.M.); N.O., Proteacex, B.FI., v., 459. 
Wood red, hard, close-grained, and durable, prettily marked, 
suitable for cabinet-work. (Caf. Queensland Timbers, Col. and 
Ind. Exh., 1886.) Height, about 3oft. 
Queensland and Northern Australia. 
384. Grevillea robusta, 4. Cunn., (Syn. G. umbratica, A. Cunn.); 
NO} Proteaces,, B.FI:, v., 459. 
_ “Silky Oak.” “ Warra-garria ” of the aboriginals of the Richmond 
and Clarence Rivers ; ‘‘ Tuggan-tuggan” of those of Queensland. 
The wood is extensively used for the staves of tallow casks, 
and is, in consequence, becoming scarce. It is much in repute 
for cabinet-work and lining of houses. It is elastic and durable. 
The tree resists drought in a remarkable degree. (Mueller.) Of 
all the Australian trees grown on Ceylon estates Grevillea robusta 
seems the most promising. (Zyropical Agriculturalist, Dec., 
1885.) 
Although distinctly a pretty wood, yet on account of its light- 
-ness of colour it has not the same richness of appearance of many 
other Proteaceous timbers. It is moderately hard, and works well. 
Where knots are present, they are not ‘“‘ dead” or loose, but are 
themselves prettily marked, and add much to the beauty of polished 
specimens of the wood. Two slabs of this wood in the Techno- 
logical Museum, which have been seasoned over twenty-five years 
(having been exhibited at the London International Exhibition of 
1862), have weights which correspond to 38lb. 140z. and 36]b. 
20z. respectively per cubic foot. In the Sydney Mint experiments, 
1860, the specific gravity is given at .564, equivalent to a weight 
of 35lb. 40z. per cubic foot. Diameter, 24 to 36in.; height, 70 
‘to 8oft. 
New South Wales and Queensland. 
