174 Mr Seward, Notes on the Binney Collection, etc. 



Zeillee, R. (97). Observations sur quelques fougeres des depots 

 houillers d'Asie Mineure. 



Bull. Soc. hot. France. Vol. 44, p. 195, 1897. 



Explanation of Plates. 



(Microphotographs by Mr W. Tarns.) 



x 1 - primary xylem ; x 3 = secondary xylem ; It = leaf -trace ; 

 px = protoxylem. 



Plate V. 



Fig. 1. Radial Longitudinal section. (Nat. size.) 



Fig. 2. Transverse section. (Nat. size.) 



Fig. 3. Transverse section through the inner edge of the secondary 



xylem and the tissues of a leaf-trace. (x24.) 

 Fig 4. Transverse section through part of the secondary wood. 



(x24.) 



Fig. 5. Transverse section through a leaf-trace encroaching on the 



secondary wood. (x24.) 

 Fig. 6. Transverse section similar to fig. 3. (xl6.) 



Plate YI. 



Fig. 7. Transverse section through the primary xylem and the edge 

 of the secondary xylem. It 1 — It 3 = leaf-traces. (x7. Slide i. 1.) 



Plate VII. 



Fig. 8. Transverse section through the inner edge of the secondary 



wood and some protoxylem groups of the primary xylem. (x50. 



Slide I. 1.) 



Fig. 9. Longitudinal section through the metaxylem. (x50. Slide 1.8.) 



Fig. 10. Tangential longitudinal section through the secondary wood 



showing a leaf-trace. (xl6. Slide i. 7.) 



