258 GLOSSOPTERIS AND ITS ALLIES. 



Fig. 3. — The upper and decorticated surface of the matrix-cast, with small 

 projecting rods, that are perhaps the casts of the vascular 

 bundles. 



Fig. 4. — Another portion similar to Fig. 3, with concentric undulations, 

 probably super-induced. 



Plate xix. 



Fig. 1. — The upper portion of the caudex, and lower parts of the fronds, 

 seen in PI. i. fig. 1. Enlarged. 



Fig. 2. — Portion of a frond, showing mid-rib, proximal parallel secondary 

 veins, and distal reticulation or mesli. Enlarged. 



