XIV 



LIST OF WOODCUTS. 



Fig. 



30. Stem of Caulopteris macrodisciis . 



31. „ ,, Balfonri (Carr.) 



32. „ ,, Morrisi (Carr.) 



33. ,, Sigillaria pachy derma 



34. Sigillaria reuiformis 



35. ,, pachyderma 



36. ,, (Faviilaria) tessellata 



37. „ pachyderma 



38. Stigmaria ficoides 



39. ,, „ (S, anabathra of Corda) 



40. Bifurcating stem of Lepidodendron obovatum (elegans) 



41. Stem of LeiDidodendron crenatum 



42. Fructification of Lepidodendron 



43. Longitudinal section of Fructification of Triplosporites 



44. (1). Fruit of Selaginella spinulosa, A. Braun (Lycopodium 



selaginoides, Linn.) ..... 



(2). Scale and sporangium from the upper part of cone 



(3). Antheridian microspores from ditto 



(4). Macrospore ...... 



(5). Scale and sporangium from lower part of cone, con 

 taining macrospores .... 



(6). Fruit of Lepidostrobus ornatus (Hooker) 



(7). Three scales and sporangia of ditto 



(8). Microspores from sporangia of the upper part of the 



cone of Triplosporites Brownii, Brongn. 

 (9). Macrospore from the sporangia of the lower part 

 (10). Scales and sporangia of a cone of Flemingites 

 45 a. Calamites Suckovii 

 45 6. Septum or Phragma of a Calamite 



46. Vertical stems of Calamites — in coal-measures of Treuil 



near St. Etienne 



47. Fruits of Equisetum and Calamites 

 (1). Equisetum arvense, L. 

 (2). Portion of sporangium wall . 

 (3, 4). Spores — elaters free 



(5). Longitudinal section of part of one side of cone 

 (6). Transverse section of cone 

 (7). Calamites (Volkmannia) Binneyi (Carr.) 

 (8). Portion of sporangium wall . 

 (9). Two spores .... 



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