TECHNOLOGY AND ANATOMY OF SOME SILKY OAK TIMBERS. 373 
cell, whilst in the former the cell walls are so numerous 
as to make the structure appear lost in so many lines. 
Amongst them appear at rare intervals cylindrical or 
elongated bodies with processes scattered over the surface, 
a transverse section showing them to be amorphous; 
therefore they can hardly be classed as sclerenchymatous 
bodies, but are in all probability silica. Very small spheri- 
cal bodies are also seen in the cells. The bordered pits of 
the parenchyma are well seen in section in both the end 
and side walls. The wood parenchyma is the only instance 
in which the small spherical bodies were detected. 
Tangential Section.—The most conspicuous objects in this 
view are, the transverse sections of the multiseriate rays, 
the uniseriate rays being quite insignificant compared to 
these. The other structure calls for no remarks, being 
explained in the radial section. A brown amorphous sub- 
stance is in evidence in several of the vessels which have 
scalariform septa. 
ORITES EXCELSA R. Br., Prickly-leaved Silky Oak. (B. FI. 
v, 411). 
Remarks.—This species is best known in the bush by the 
above name, but when cut into planks and placed on the 
market has the same common designation as Grevillea 
robusta, viz. “Silky Oak,’”’ although there really is little 
difference in the colour of the wood, but microscopically and 
chemically the differences are very marked. 
fange.— Brushes of the North Coast of New South Wales 
and coastal districts of Queensland. 
Timber. 
(a) Macroscopical.—Physical Properties. 
Colour.—It falls, like most of the ‘‘ Silky Oaks’’ described 
in this paper, ina class of browns, this being pale but a 
shade darker than Grevillea robusta, or perhaps light pink 
would nearly describe it. 
