535 



CUPRESSINOXYLON, sp. 



Figs. 7-9. 



Growth rings are well defined here. Many cells have the 

 lumen filled with dark-brown matter. Tlie medullary rays 

 are close together and have light-brownish contents with 

 occasional "resin-spools." 



The average diameter of the tracheids is 20/x. 



Bordered pits are uniseriate, separate, and circular. The 

 spring wood may show two rows of pits on a few tracheids. 

 Pit-s also occur scattered on the tangential walls (fig. 7). 



Medidlary rayi< simple, uniseriate, and numerous through- 

 out the wood (fig. 8). They are usually from one to twenty 



Fig. 10. 



Dadoxylon, sp. Yallouru. 

 Hexagonal pitting on 

 radial walls of the tra- 

 cheids. x275. 



Fig. 11. 



Dadoxylon J sp. Yallourn. 



Numerous small pits in 



the field. x275. 



cells high. At times they may reach a height of thirty cells. 

 Some of the ray cells have contents. The pits in the field 

 are one or two oval and oblique, and there may be the appear- 

 ance of a border (fig. 9). 



Xylem parenchyma is present with resinous (?) contents. 



Tlie general characters, especially the pitting, in con- 

 nection with the medullary rays, and the presence of wood 

 parenchyma, suggest that this specimen should be included 

 under Cupressin^oxylon . 



Dadoxylon, sp. 



Figs. 10, 11. 



This is a roughly cylindrical piece of wood, oval in cross 



section, with the outer cortex preserved and remaining 



attached to the woody cylinder. The long diamet-er of the 



