PLATE XIV. 



Lepidodendron Harcourtii. 



Fig. 1 (No. 32). A portion of a stem cut transversely, showing the rhomboidal 

 scars and the leaf-attachments on the outside, and the two vascular axes of a horseshoe 

 shape in the inside. This stem is cut across, probably at a point just before it com- 

 menced to divide in two. Natural size. 



Fig. 2. One of the horseshoe-shaped bodies, showing vascular scalariform structure 

 on its outside margin. Magnified 3^ diameters. 



Fig. 3. The other. Magnified 3^ diameters. 



Fig. 4 (No. 33). Sigittaria vascularis. A transverse section of the stem, showing 

 two woody cylinders, with an apple-shape section, cut across at a point before the stem 

 began to dichotomize. From the Bullion seam of Coal at Spa Clough, near Burnley. 

 Magnified 3^ diameters. 



Fig. 5. Section of one of the central bodies, showing large detached (scalariform) 

 vessels in fine orthosenchyraatous tissue in the middle, and a woody cylinder of (scalari- 

 form) tubes or utricles, gradually diminishing in size as it goes outwards towards a 

 radiating cylinder of barred tubes in wedge-shaped masses. Magnified 1 diameters. 



Fig. 6. The other. Magnified 10 diameters. 



