30 Stopes, a Nezv Fern from the Coal Measures. 



DESCRIPTION OF PLATES. 



Figs. I and 2 are from photographs taken by Mr. James 

 Lomax, of Bolton, and Figs. 3, 4, 5, 6, 7, 8, and 10 were specially 

 photographed by Mr. D. M. S. Watson, to whom I am much 

 indebted. 



Plate I. 



Fig. I. Transverse section across the whole plant shewing 

 the main axis a surrounded by numerous rootlets and petioles. 

 i^Slide T 7.). X 175 diam. 



e. Petiole of which but a small fragment is preserved, though 

 the shape is indicated by the clear calcite mass {see 

 p. 11). 



ao. The largest petiole, found in many sections of the series, 

 and shewing small branch bundles in the cortex (see 

 p. 10). The narrow band like meristele is seen with its 

 convex side toward the axis. 



