DADOXYLON. 197 



this section is figured in Text-fig. 41, enlarged 30 times. Among 

 the xyleni elements a number of cells with brown contents are 

 found, sometimes forming a well - marked ring, at other times 

 more scattered. These are possibly secretory cells. In the radial 

 section, the short tracheides with bordered pits, and the numerous 

 medullary rays are very clear. This is also the case in the 

 tangential section, where, however, pits are absent from the walls 

 of the tracheides. 



Australia (?near Newcastle). 



51,475. Trans. Sect. A section precisely similar "to sections 

 51,479 and 51,434. The rings of growth are apparently irregular, 

 owing to bad preservation along certain lines. 



Bottom of the cliff, Newcastle, New South Wales. Nicol Coll. 



51,455. Tang. Long. Sect. A section similar to 51,503 and 

 51,461, but not so well preserved. The section in part is nearly 

 radial. 



Newcastle, New South Wales. Nicol Coll. 



51.445. Had. Long. Sect. A radial section similar to 51,616 

 and 51,476, but not so thin. 



Newcastle, New South Wales. Nicol Coll. 



51,423. Trails. Sect. A good section showing the medullary 

 rays and well-marked rings of growth. 



Australia. Nicol Coll. 



51,432. Trans. Sect. A section, probably of this species, 

 4 3 cm. long, but only showing one ring of growth. The medullary 

 rays are well marked. 



Scaffold Hill Quarry, near Newcastle, New South Wales. 



Nicol Coll. 



51.446. Trans. Sect. The square tracheides, the medullary 

 rays, and the rings of growth are seen in this section. 



Australia. Nicol Coll. 



51,459. Trans. Sect. A badly preserved, crushed, and distorted 

 stem, possibly of this species. 



Lake Macquarie, New South Wales. Nicol Coll. 



51,462. Had. Long. Sect. A well-preserved section, showing the 

 tracheides with multiseriate bordered pits, and the medullary rays, 

 usually 6-9 cells in height, very numerous, or almost crowded. 



Australia. Nicol Coll. 



