533 



Description of Specimens. 

 Mesembrioxylon, sp. 

 Yallourn A. (fig. 4). 



This wood shows well-defined, (jrowtli rings. Tracheids 

 or xylem parenchyma containing dark-brown matter were not 

 observed . 



Average diameter of the tracheids is 45/;.. 



Bordered pits are in one or two rows, contiguous but not 

 compressed. Where the pits are in two rows they are alternate 

 or subopposite (fig. 4). Pits occur occasionally on the 

 tangfential walls of the tracheids. 



Ciipressinoxylo)!, sp. Yallourn. Tangential 

 ^;ection showing medullary rays and occa- 

 sional pitting on taugential walls of tracheids. 

 x27o. 



Medidlatij ra//s simple, uniseriate, usuall}'- from one to 

 eight cells high, occasionally ten. Some of the ray cells con- 

 tain dark-brown matter. There are from one to four circular 



