PLATl-; 10. 



Fig. 1, 2. 408. 7. PAL^oniYcus? STUiATUs. ( Pag. 22.) 



1 a. A fiaqmont of a .stem having the striated surfai'c well preserved, with a more elevated line along the 



centre of the portion exposed. 

 1 6. A fragment from near the base, with the rootlets preserved. 

 1 e. A similar fragment, givifig indications that the. stem was hollow. 



1 d. A fragment of a small specimen, showing the upper termination. 



2 is perhaps the expanded tcrmiuation of one of these stems, which has been much flattened : it is represented 



of the natural size. . 



Fig. 3. 409. 8. P.\L.E0PHYCtis ? ( Pag. 22.) 



Fig. 4, 5, 6 & 8. Roots of different species of inarine jjlants, ij-c. ( Pag. 25.) 



Fig. 7. 415. 1. ICHNOPHYCUS TRIDACTYLUS. ( Pag. 26.) 



Fig. 9 a, J, & 10. Roots of Buthol rephis. ( Pag. 21.) 



