260 



Double Cross- Gra in 



In some respects the character of the grain differs from the typical 

 form of serpentine cross-grain as shown in Shorea robusta and Chloroxylon 

 Swietenia. The longitudinal and parallel zones are not readily distin- 



<< mcQOoQQ 



Fig. 10. Hardwickia binata. Transverse series. Same scale as Fig. 3. 



guishable on a radial board which is due partly to the shortness of the 

 period length and the comparatively small amplitude and partly to 

 periods combining to form compound periods of big extent; stick 3 of 

 the longitudinal series supplying a good example. 



