TECHNOLOGY AND ANATOMY OF SOME SILKY OAK TIMBERS. 375 
Radial Section.—In this species the wood parenchyma is 
very little in evidence, the columns of fibres being separated 
fairly regularly by the vessels. The multiseriate rays are 
conspicuous objects, and this is specially emphasised by 
the globules of a brown substance giving it a bead work 
appearance; they are also tracheidal in some instances. 
Sparsely scattered in the rays are afew sclerenchymatous 
stone, octangular cells, a distinct specific character. 
Tangential Section.—The dense masses of fibres are the 
salient feature of this view, and next to these the multi- 
Seriate rays showing the brown globules in the cells and 
some octagonal sections of sclerenchyma cells, a feature 
which makes the specific distinction from that of any other 
found in this series of “‘Silky Oaks.” 
EXPLANATION OF PLATES. 
Plate X VII.—Transverse sections of Grevillea robusta, Grevillea 
Hilliana, Embothrium Wickhami, Cardwellia sublimis and 
Orites excelsa (all natural size). 
» &©VWIII.—Radia] sections of the above. 
» &LX.—Tangential view of timber next to bark of the above. 
5» &X&.—Transverse section of Grevillea robusta (in colour). 
,, XI1.—Radial and tangential sections of G. robusta. 
, ©XII.—Transverse section of G. Hilliana (in colour). 
5 XILI.—Radial and tangential sections of G. Hilliana. 
5, %XIV.—Transverse section of Embothrium Wickhami (in 
colour). 
» + V.—Radial and tangential sections of #. Wickhami. 
» &*VI.—Transverse section of Cardwellia sublimis. 
5 ©&© VII.—Radial and tangential sections of C.:sublimis. 
5, *XVIII.—Transverse section of Orites excelsa (in colour). 
» ©XIX.—Radial and tangential sections of O. excelsa. 
