PLATE XXL 

 Tangential Sections. Natural Size. 



Fig. 172. 



Cocas, showing Heart-wood 



and Sap-wood. 



Fig. 173. 



Casuarina, showing the ends of the Rays 



after the removal of the Bark. 



Fig, 174 



Lophira (African Oak), showing the 



coarse prominent pores and ihe tracery 



caused by the cutting of the rings 



of soft. tissue. 



Fig. 175. 

 Stenocarpus (Silky Oak), showing the 

 splitting-up and distortion of the Rays. 



