TECHNOLOGY AND ANATOMY OF SOME SILKY OAK TIMBERS. 371 
genus, and probably of the whole vegetable kingdom, just 
as the rays of C. sublimis are larger than those of any 
other of its congeners. According to Mr. R. H. Cambage, 
‘*Bull Oak ’’ (Casuarinacez) also occurs near the coast in 
North Queensland,* where both these trees go under the 
name of ‘*‘ Bull Oak ’”’ and “Bull Silky Oak ”’ respectively, 
and probably because they both have such pronounced 
figures. The rays are prominent in every section of the 
wood, and can sometimes be shown in a radial section a 
foot long and half an inch high, when that portion of the 
ray can be caught in a straight line when cutting. 
Timber.—(a) Macroscopical.—Physical Properties, 
Colour.—Brick red, and quite distinguishable from the 
others described in this paper. Itis open in the grain with 
a comparatively small sapwood in full grown trees, but 
larger in the younger trees; the neighbourhood of the 
cambium is generally darker than the other parts of the 
wood. 
Figure.—This wood has certainly the most showy figure 
of the Silky Oaks, especially when cut on the quarter, the 
height and length of the rays leaving little of the other 
wood elements exposed. The figure of course varies accord- 
ing to the angle the timber is cut to the rays. The vessels 
give it an open grain effect, a neat figure is shown when 
cut tangentially, and in a transverse section the rays are 
of course the salient feature. 
Texture and Grain.—This is the second coarsest grained 
species described in this paper, Embothrium Wickhami 
being perhaps somewhat coarser; the large diameter of the 
vessels and exceptionally wide rays give it this character. 
The end grain is especially marked by the long distinct 
numerous lines of the rays which show more clearly than 
* This Journal, xuviir, 278 (1914). 
