x CONTENTS, 



PAGE 



VI. Dolerophyllum, Cannophyllites, Ephedrites, Gnetopsis, Schiitzia, 



Dictyothalamus, Calathiops . 123 



VII. Ferns 131 



Leaves 132 



Fructifications (Marattiaceae) 142 



Botryopterideae 1 50 



Leptosporangiate Fern-fructifications 152 



Doubtful fructifications 154 



Inner leaf-structure . . . . . . . . . . . .157 



Rhachiopteridae (leaf-stalks) 158 



Myeloxylon 160 



Fern-stems 165 



VIII. Equisetaceae, Marsilioideae, Traquairia, Sporocarpon . . . . 175 



IX. Lycopodites, Ptilophyton, Psilotites, Psilophyton, Isoetites . . .186 



X. Lopidodendreae 194 



External character of stem of Lepidodendron 194 



Aspidiaria 198 



Bergeria 199 



Knorria 200 



Leafy branches of Lepidodendron ......... 203 



Construction of the crown of Lepidodendron 205 



Ulodendron 205 



Lepidophloios 210 



Halonia 213 



Anatomy of the Lepidodendreae 215 



Lepidostrobus (fructifications of Lepidodendreae) 232 



XI. Sigillarieae 241 



External character of stems of Sigillaria 242 



Leaves .............. 247 



Construction of the entire plant 248 



Points of origin of the fructifications . 249 



Inner structure 251 



Fructifications ............. 260 



XII. Stigmaria ... 263 



External character and states of preservation of Stigmaria ficoides . . 263 



Apical growth 268 



Other species of the genus 269 



Anatomy of the shoots ..... 270 



Anatomy of the appendages 275 



Are the Stigmarias plants sui generis or are they members belonging to 



plants of Sigillaria and Lepidodendron . . . ... . 280 



Morphology of the members of Stigmaria . . . .'...- 287 



Attempts to reconstruct its course of development 291 



Cyclostigma, Arthrostigma . . . 293 



XIII. Calamarieae . 294 



Mcde of preservation. Preliminary account of the views of authors on this 



point 294 



Anatomy of the stems of Calamaria 296 



Casts of Calamites 307 



Calamitina and its leaves 316 



