354 Bower . — On the Structure of Lepidostrohus. 
Fig. 13. Part of middle cortex of LepidodendYon fuliginosum (slide No. 12), 
showing irregular intertwined filaments, x 70. 
Fig. 14. Small portion of the middle cortex of Lycopodium inundatum , showing 
trabeculae, x 150. 
Fig. 15. Cortex of Lycopodium alpinum. x 70 - 
Fig. 16. Small part of the periphery of the stele of Lycopodium dichotomum, 
showing how at certain points, though not continuously, the endodermis ( e ) may 
be represented by a single series of cells. 
