DESCRIPTIVE CATALOGUE 



of the adjacent tracheids. In radial extension a ray-cell cor- 

 responds to about 2-6 tracheids. The cells are all alike, and 

 all appear to have rather thickened walls, but, unfortunately, 

 none of them are sufficiently well preserved to show their radial 

 pitting. The cells have end- walls which slope somewhat or are 

 slightly curved (text-fig. 70, m.). Though narrow tangentially, 

 the cells are sometimes rather high vertically, as is seen in the 

 radial section. 



Text-fig. 70.- -Podocarpoxylon Sol nisi, sp, nov. Radial section of the 

 wood, to show the small distant bordered pits, the resin-containing 

 wood-parenchyma, r/>., and the outlines of the medullary ray-cells, m. 

 No. V. 21 17/ 



AFFINITIES. As the radial pitting of the medullary ray-cells is 

 not petrified, it is impossible to settle conclusively the systematic 

 position of this fossil. There are, however, many details which 

 indicate a Podocarpoid affinity, and none which contradict this 

 conclusion. Though there is little conclusive in a transverse 

 section, the general appearance of the wood with its narrow 

 zones of autumn wood and well-marked growth -rings is quite 



