Manchester Memoirs, Vol. xlv. (1901), .V^. T 21 



EXPLANATION OF PLATES. 

 PLATE IL 



LepidopJUoios fuliginosus (Williamson). 



Slide No. 645 A of Cash Collection in the Manchester Museum. 



Fig. I. A portion of the transverse section of the stem to 

 illustrate the general arrangement of the tissues. 

 //^ = phloem region. (:(^ = cambium, aj^ = secondary 

 tissue mostly parenchymatous. xy^ - primary 

 xylem. 



Fig. 2. A portion of section enlarged 60 diameters to show the 

 phloem region in detail. 



Fig. 3. Another portion of section showing the divided phloem 

 cells. Two groups near the centre are particularly 

 noticeable. 



PLATE IIL 



Figs. 4, 6, and 7 from same slide as Figs, i, 2, and 3. 



Fig. 4. Showing very much enlarged the peculiar dividing of the 

 phloem cells. 



Fig. 5. A longitudinal section from a less well-preserved specimen 

 of Lepidophloios fuligitiosus, showing the remains of 

 transverse and oblique septa across the large spaces 

 so frequently found in the phloem region of this 

 fossil. The septa are indicated by an asterisk (*). 



Fig, 6. Transverse section of a leaf-trace when passing through 

 the inner cortex, showing the arrangement of the 



