370 R. T. BAKER. 
fibres occupy a large area of the wood structure, and having 
a large lumen and comparatively thin walls give quite a 
uniformity of structure, almost similar to that of a conifer; 
the wall perforations are very rare. The rays too are not 
by any means broad, and the parenchyma is most limited 
and not difficult to discern in this section, the cells being 
filled with an amorphous deposit. The vessels are numer- 
ous and mostly didymous and tridymous. 
Radial Section.—In places the fibres make quite a solid 
face and the wood parenchymatous cells are a less signifi- 
cant feature of the section. The ray parenchyma cells are 
characterised by a brown substance which quite fills them 
and gives the appearance of a brick wall to this portion of 
the slide, but this substance occurs in the vertical paren- 
chyma and is only rarely in the vessels. A few specimens 
of silica were seen. 
Tangential Section.—Only in this view is the character of 
a Proteaceous timber seen, the multiseriate rays and fibres 
almost making up the whole structure. The fibres appear 
as very compact, in strong lines around the rays, and few 
pits were detected. It will be noted from the figure that 
it is the outer cells of the rays that contain the red colour- 
ing substance. Uniseriate rays are small and fairly dis- 
tributed, whilst vertical parenchyma is a conspicuous 
feature. 
CARDWELLIA SUBLIMIS F.v.M., Bull Silky Oak, Silky Oak, 
Gold-sprinkled Silky Oak. (B. Fl. v, 538). 
Remarks.—The origin of the first common name given 
above is difficult to trace, and may possibly be used as a 
term of comparison in regard to the size of the medullary 
rays, as obtains in a similar case of a Casuarina (C. Lueh- 
manni), which is known as *‘ Bull Oak,” the rays in this case 
being more pronounced than in any other species of that 
