Figs. 5. Fragment of root of Conifer. 6. Portion of pinna of Cyclopteris Brownii; (6 a) stipe of C. Jacksoni. 7 & 8. Sphenopteris recurva. 9. Cordaites flexuosus. 10. Pinna of a Fern, not named; (10 a) portion magnified. 11. Carpolithes lunatus. 12 & 13. Trichomanites filicula. 14. Lycopodites comosus; (14 a) portion magnified. 15. Carpolithes spicatus. 16. Fern, not named. 17. Pinna of Cyclopteris Rogersi. 18. Stipe of Cyclopteris Rogersi. PLATE XVIII. Fig. 19. Leptophlæum rhombicum, restored; (19 a) leaf. 20. Fragment of bark of Conifer. 21. Anarthrocanna Perryana. 22. Rhizoma of Psilophyton princeps; (22 a) cross section of the same, showing the axis and bark; (226) portion of cross section magnified, showing remains of the bark 3, of inner bark e, of the woody sheath of the axis y, of the scalariform centre of the axis &; (22 c) cross section of the tissue of the axis, magnified 100 diameters; (22 d) longitudinal section of the tissue of the axis; (22 e) cross section of the outer bark; (22 f) longitudinal section of the axis of the aërial stem for comparison with e; (22 g) cross section of the axis of another specimen, magnified as in c. 23. Portion of the stem of Nematoxylon tenue; (23 a) cross section slightly enlarged; (236) longitudinal section; (23 c) transverse section, magnified 200 diameters. PLATE XIX. Fig. 24. Longitudinal section of the stem of Nematoxylon crassum, magnified 100 diameters; (24 a) cross section; (246) transverse section of a few cells, magnified 200 diameters. 25. Stem with tubercles; (25 a) magnified. 26. Pinna of Cyclopteris Jacksoni; (26 a) separate pinnule; (266) diagram of venation; (26 c) small variety. 27. Pinna of Cyclopteris Rogersi; (27 a) separate pinnule; (27 b) diagram of venation. 28. Pinna of Cyclopteris Halliana; (28 a) separate pinnule; (286) dia gram of venation. 29. Lycopodites. 30. Stem with ridges. 31. Stigmaria?; (31 a) areole magnified. 32. Fucoides (Chondrites) Cauda-galli (reduced). 33. Fucoides (Zonarites) velum (reduced). 2. Notice of a NEW SPECIES of DENDRERPETON, and of the DERMAL COVERINGS of certain CARBONIFEROUS REPTILES. By J. W. DAWSON, LL.D., F.R.S., F.G.S., Principal of M'Gill University, Montreal, THE following notes relate to new facts ascertained in the course of a re-examination of the remains of Reptiles from the Coal-formation of Nova Scotia, made in the preparation of a résumé of the characters of these creatures, which is in course of publication. I desire now to communicate these facts to the Geological Society, as they are connected with, and supplementary to, the descriptions published at various times in its Journal. |