1865.] DAWSOK — COAL-FOEMATJOK. 169 



Plate XII. 



Pig. 56. Scalarifonn vessel of LepidopJdoios. 



57. Tissues of Sigillaria. 



58. Vessel of Sphenophyllum. 



59. Tissues of Calamodendron. 



60. Tissues of Galamites. 



61. Scalariform tissue of Ferns. 



62. Bast tissue of Sigillaria. 



63. Cells of JDadoxylon Acadianum. 



64. Cells of D. materiarium. 



65. Cuticle of Pinmdaria. 



66. Vessel of Sphenophylhim, 200 diameters. 



67. Vessels and cells from vascular bundles of Ferns, 200 diameters. 



68. Tissues of Sigillaria, 200 diameters. i c^) 



69. Rhabdocarpus insignis. ' 

 70-72. Cardiocarioum, spp. 



73. C. bisecUim. 



74. C.fiuitans. 



75. Trigonocarpum minus. ■ 5" 



76. T. 8igillaricB. 



77. T. avellanum. 



78. T. interoncdium ; 78 «, nucleus of do. 



79. T. Noeggcrathi. 



80. Sporangites papillata ; 80 J, nat. size. 



81. B. glabra ; 81 b, nat. size. 



82. Fragment of AnthoUthes. 



83. Stigmaria with scars in rhombic areoles. 



84. Stigmaria with bark divided by vertical furroAvs (var. altcrnans), 

 ^ 85. Stigmaria with large scars in elongated areoles. 



86. Stigmaria with elongated scars {Knonia iorm). 



87. Stigmaria another variety, resembling I)i2Jlofcgium. 



88. Equisetites curtus. 



89. Calamitcs Nova-scoticus. 



Figs. 54-64 inclusive are drawn to a uniform scale of 90 diameters. Figs. 83 (o 

 87 are taken from photographs, and are two-thirds the natural size. 



Plate XIII. 



Fig. 90. Aster ophyllites trinervis ; 90 «, portion of leaf enlarged. 



91. N<xggerathia dispar, one-half natural size. 



92. Cyclopteris hispida ; 92 a, portion of pinnule magnified, showing haiiy 



surface and impressions of nervures. 



93. Neuropteris perelegans ; a, portion magnified, showing venation. 



94. cydopteroides. 



95. Cyclopteris antiqua. 



96. Fhylloptcris antiqua ; 96 a, portion magnified, showing venation. 



97. Sphenopteris munda ; 97 a, portion magnified. 



98. latior ; 98 a, pinnule magnified, showing venation and sori. 



99. Canadensis ; 99 a, pinnule magnified, showing venation. 



100 and 100 a & b. Pinnules of Alethopteris grandis; 100 a, portion raaj^- 

 nified, showing venation. 



101. Beinertia Goepperti; 101 a, pinnule magnified, showing venation. 



102. Ifiplotegiumrditsum; 102 «, leaf-scar magnified. 



103. Lonchopteris tenuis ; 103 a, portion enlarged, showing character of sur- 



face. 



