﻿PLATE XXI. 

 Stigmaria Jicoides, Lindley and Hutton. 



Fig. 1 (No. 41). A transverse section of a specimen from the " Bullion Seam " of 

 Coal, near Burnley. Magnified 6 diameters. 



Fig. 2. Longitudinal section of the outer radiating cylinder, and a portion of the 

 outside of the specimen, showing the bell-shaped cavities, from which the rootlets proceed. 

 Magnified 6 diameters. 



Fig. 3. A tangential section of the same specimen, showing the vascular bundles 

 and the medullary rays. Magnified 8 diameters. 



Fig. 4. The outside of the specimen. Natural size. 



Fig. 5 (No. 42). A transverse view of a specimen (locality unknown), showing the 

 wedge-shaped masses of the internal woody cylinder, separated by spaces traversed by the 

 vascular bundles. Natural size. 



Fig. 6. A longitudinal view of the narrow ends of the wedge-shaped masses of 

 the woody cylinder next the pith, traversed by vascular bundles. Magnified 4 

 diameters. 



Fig. 7 (No. 43). A longitudinal section of a specimen from Golden Hill, North 

 Staffordshire, showing the narrow ends of the wedges forming the woody cylinder next 

 the pith, and exposing the spaces traversed by the vascular bundles, as well as smaller 

 single-celled orifices, which appear to have been occupied by medullary rays. Magnified 

 6 diameters. 



