The Fossil Plants of the Coal Measures. 65 



Nodal Cortical Disks. 

 Tra7isverse. 



E.— p. 48. Fig. 1 6k", C.N. 874. 

 I.— p. 332, Fig. 32, C.N. 908. 

 Longitudinal. 



E.— p. 47, Fig. 5. C.N. g7i. Fig. 15, C.N. 875. See also C.N. 904. 



Leaves. 

 Longitudinal. 



E.— p. 47, Fig. 14m", Fig. 15m, C.N. 875. See also C.N. 904. 



Transverse. 



E.— p. 49, Fig. 14m', Fig. 17. 



I-— P- 333. Fig. 32mm', C.N. 908. 

 Verticillate arrangement. 



E.— p. 47. 



I-— P« 333» Fig. 32mm' C.N. 908. 



ASTEROPHYLLITES INSIGNIS. Will. 

 BURNTISLAND (PETTICUR) PLANT. 

 Young Twig. 



Primary Xylem. 



E.— p. 49, Figs. 1 8, C.N. 909. Fig. 19, C.N. 917. 



Older Branches. 



Secondary Xylem. 



E. — p. 49, Fig. 20. See C.N. 919. p. 50, Fig. 21. C.N. 913. 



Tracheids. — p. 51, Figs. 23, 24, 25, for transition from barred to 

 reticulate Tracheids see C.N. 922 and 923. 



Medullary rays. — p. 51, Fig. 22, C.N. 892. 



Cortex. 



E.— p. 49, Fig. 19, C.N. 917. Fig. 2ih, 50, C.N. 913. 



No leaves or Nodal Developments of this plant have yet been discovered. 



Divergent Tracheides ; to a branch ? 

 E.— p. 52, Fig. 27X, C.N. 926. 



Roots of Asterophyllites ? 



See Amyelon E. — p. 67 et seq. p. 71. 



Relations to Sphenophyllum.* 



E.— p. 73-75- 

 L— p. 332.5. 



R._p. 97.98. 



* The Lycopodiaceous affinities of Asterphyllites and Sphenophyllum dwelt upon by me 

 in Memoir E must now be withdrawn, as not in accord with our more recent knowledge. 



