1914] HOLDEN— CRETACEOUS LIGMTES 177 



Fig. 18. — Same; radial section, showing tracheary pits sometimes crowded 

 and sometimes scattered; thin-walled rays, with numerous small pits on 



longitudinal wall ; X 90. 



Fig. 19. — Same; tangential section, showing tangential pitting; X9°- 



Fig. 20. — Paracupressinoxylon cupressoides; transverse section near pith, 

 showing abundance of parenchyma cells; X15. 



Fig. 21. — Same; longitudinal section; X15. 



Fig. 22. — Same; transverse section including bark and wood; in the 

 former the large parenchyma cells and crushed fibers may be seen ; X 9°- 



Fig. 23. — Same; radial section, showing low, resinous rays, large paren- 

 chyma cells, and scattered tracheary pits; X90. 



Fig. 24. — Same; tangential section; X90. 



Fig. 25. — Paracupressinoxylon sp.; transverse section, showing stone cells 



in the pith, and wood parenchyma; X15. 



Fig. 26. — Same; longitudinal section; X15. 



Fig. 27. — Same; radial section of mature wood; X4°- 



Fig. 28. — Same; section near pith, showing bars of Sanio; X250. 



Fig. 29. — Another specimen of Paracupressinoxylon showing wood paren- 

 chyma, scattered tracheary pits, and thin- walled rays; X90. 



Fig. 30. — Another specimen, showing peculiar arrangement on stone cells; 



X40. 



Fig. 31. — Another specimen, radial section, showing fusion pits in the 



rays; X150. 



Fig. 32. — Same; tangential section, indicating resinous exudations in 



tracheids from rays; X90. 



