Holden . — Jurassic Coniferous Woods from Yorkshire . 545 
8. Jeffrey, E. C. : Araucariopitys , a New Genus of Araucarians. Bot. Gaz., xliv, 1907, pp. 435-44 
9 . Gerry, E: Bars of Sanio in the Coniferales. Ann. Bot., xxiv, p. 231. 
10 . Sinnott, E. W. : Paracedroxylon , Rhodora, II. 
11 . Goth an, W. : Zur Anat. leb. u. foss. Gymnospermen Holzer. Abhandl. d. Konigl. Preuss. 
Geol. Landesanstalt, Neue Folge, Heft 44, Berlin, 1905. 
12. Stopes, M. C., and Fujii, K. : Structure and Affinities of Cretaceous Plants. Phil. Trans. Royal 
Soc., London, Ser. B, vol. cci, pp. 1-90. 
DESCRIPTION OF PLATES XXXIX AND XL. 
Illustrating Miss Holden’s paper on Jurassic Coniferous Woods from Yorkshire. 
PLATE XXXIX. 
Fig. 1. Xenoxylon phyllocladoides , transverse section x 60. 
Fig. 2. Same, radial longitudinal section, x 60. 
Fig. 3. Same, to show tracheary pitting, x 250. 
Fig. 4. Same, to show ray structure, x 250. 
Fig. 5. Xenoxylon latiporosum , radial section, x 40. 
Fig. 6. Same, to show tracheary pitting, x 250. 
Fig. 7. Paraphyllocladoxylon eboracense , radial section, x 60. 
Fig. 8. Same, to show pitting of rays, x 250. 
Fig. 9. Same, tangential section, x 60. 
Fig. 10. Paraphyllocladoxylon araucarioides , radial section, x 60. 
Fig. 11. Paracupressinoxylon cedroides } transverse section to show traumatic resin canals, 
x 40. 
Fig. 12. Same, radial section, showing resin canal, x 40. 
Fig. 13. Same, radial section, showing tracheary pitting, x 60. 
Fig. 14. Same, showing ray pitting, x 325. 
Fig. 15. Paracupressinoxylon cupressoides, transverse section, x 60. 
Fig. 16. Same, longitudinal section, showing wood parenchyma, x 60. 
PLATE XL. 
Fig. 17. Metacedroxylon araucarioides , radial section to show radial pitting of tracheides. 
x 125. 
Fig. 1 8. Same, to show pitted rays, x 250. 
Fig. 19. Similar wood from Scarboro, transverse section, x 60. 
Fig. 20. Same, radial Section, showing compressed pits and tyloses, x 60. 
Fig. 21. Same, tangential section, x 60. 
Fig. 22. Metacedroxylon latiporosum , transverse section, x 40. 
Fig. 23. Same, radial section, x 40. 
Fig. 24. Same, radial section, showing large pits, x 125. 
Fig. 25. Brachyoxylon sp., showing ray pitting, x 80. 
■ Fig. 26. Same, showing A raucarian tracheary pitting, x 325. 
Fig. 27. Brachyoxylon sp., showing septate tracheides. x 60. 
Fig. 28. Araucarioxylon sp., showing tracheary pitting, x 60. 
Fig. 29. Proto brachyoxylon eboracense , showing thin rays, x 60. 
Fig. 30. Same, showing degenerate bars of Sanio. x 325. 
Fig. 31. Podocarpoxylon sp., showing bars of Sanio. x 325. 
Fig. 32. Podocarpoxylon sp., radial section, showing terminal parenchyma, x 60. 
