Tlic Fossil Plants of tJie Coal Measures. loi 



Meduli,a. 

 Vertical. 



C— p. 28s, Fig. 5, C.N. 487. 



Primary Tracheal Cylinder. 

 Transverse. 



Yotmg states seen in all the sections enumerated under the head 

 Medullary Cavity. 

 Vertical. 



C.-p. 285, Fig. 5, C.N. 487. 



Dichotomy (Primary cylinder dividing). 

 C— p. 291, Fig. 19. See C.N. 484. 



Each half of the divided cylinder again become cylindrical 



See C.N. 467-486. 



Cortex. 

 Transveise. 



C— p. 284, Fig. I, C.N. 468. 



Vertical. 



C. — p. 285, Fig. 6 and 7, C.N. 477. 



Leaves. 

 Trajisverse. 



C— p. 284, Fig. I, C.N. 468. 



Vertical. 



C.N. 477. 



More Matured Stems or Branches. 

 Medulla. 

 Transverse. 



C— p. 289, Fig. 15, C.N. 492. See also C.N. 489. 



Longitudinal. 



C— p. 289, Fig. 14, C.N. 491. See C.N, 490. 



Pfi.mary Tracheal Cylinder. 

 Transverse. 



C— p. 287. Fig. 9, C.N. 488. 

 p. 288, Fig. II, C.N. 489. 



Vertical. Radial. 



C. — p. 288, Fig. 10, C.N. 498. See also 490 and 498. 



Scondary Xylem Strand. 

 Transverse. 



C— p. 288, Fig. II, C.N. 4S9. See also C.N. 501-2. 



Vertical. Radial. 



C— p. 288, Fig. 10, C.N. 498. See also C.N. 490. 



Tangential. 



C— p. 288, Fig. 12, C.N. 497. Fig. 13, C.N. 495. Fig. 22, C.N. 495. 



