The Fossil Plants of the Coal Measures. 59 



Cortex — Middle. 



R.-p. 90, Fig. 3c, C.N. 1 1 38. 

 Gum-Canals. 



R,— p. '90, Fig. 3b, C.N. 1 1 38. Fig. 2 A 2l. 



Cortex — External. 



R.— p. 90, Fig. 3b, CN. 1138., 

 Fibrous Cortical Bands. 

 Transverse. 

 R. — Figs. 4a and 5a, C.N. 1138. Figs, ig and 3g'. 



Parenchymatous spaces. Like R. — Fig 6i. 

 R. — p. 90, Figs, if and 3L p. 91, Fig. 9hh' and f. 

 D.— p. 385, Fig. 10, C.N. 1 1 13. 



Longitudinal, Radial, and Tangential. 



Medulla. 



Radial not Figured. 



See C.N. 1124 and 1982. 



Primary Xylem. 



Not distinguishable in long sections. 



Secondary Xylem. 

 Tangential. 



D.— p. 385, Fig. I5k'k". See 1184. 



Tracheids of Primary and Secondary Xylem. 

 Tangential Surfaces. 



D.— p. 380, Fig. 4, C.N. 1 167. 

 Radial Surfaces. 



D.— Fig. 9, C.N. 1 183. 



Medullary Rays. 

 Tangential Sections. 



D.— p. 382, Fig. 8. See C.N. 1184. 

 Radial Section. 



D.— Fig. 9, C.N. 1 183. 



Cortex. 



Tangential of outer layer. 



D.— p. 385, Fig. 13, C.N. 1 146. 



R.— p. 90, Fig. 6, C.N. 1 144. 

 Periphal Surface. 



See C.N. 1205 and 1207a. 

 Cast of the above Surface. 



See C.N. 1206 and 1207. 



Peripheral Appendages to the Cortex. 

 R.— p. 91, Fig. 6h, h', h", C.N. 1144. 

 Fig. 8hh. Fig. 9hh'. 



