





PLATE V. 









ILLUSTRATIONS OF STERNBERGIA. 



F 



^3 



1 





FiyZ 



Fj.Ci. L — Portion of fSternbergia, (nat. size,) («) Remains of Woody Fibre. 

 Fio. 2. — Transverse Section of one of the Diaphragms of Fig. 1, (magnified.) 



Ficfl 



Ficj^ 



Fig. 3. — Junction of Diaphragm and Wood of Fig. 1, (magnified.) 

 Fifj. 4.— Woody Tissue of Fig. 1, (highly magnified.) (a) Cell Walls. (6) Medullary 

 Rays, (r) Hexagonal Discs. 



FicjS 



6 e fc 6 



Fig. 5. — Transverse Section of Recent Cecropia peltata, (nat. size.) (a) Bark, (i) 

 Wood, (c) Pith lining Medullary Cavity, (rf) Diajihragm of Pith. 



Fig. 5. A. — Section of young branch of a species of Ficus, showing the outer pith tissue 

 and partitions, and the spaces between the latter still filled with the ordinary or 

 inner pith. Reference letters snme as Fig. 5. (c) Ordinary Pith. 



Fig 6 



Ficj^ 



j Fig. 6. — Flattened Sternbergia with compressed Bark, (nat. size.) 



I Fig. T.— Flattened Trunk, one foot in diameter, with Sternbergia. (a) Portion of 



j Sternbergia Cast. 



