PLATE 8. 
Fig. 1. 411. 1. Rusophycus clavatus. 
1 a. A specimen with two stems, apparently proceeding from a single root. 
1 b. A smaller single specimen. 
Fig. 2. 412. 2. Rusophyccs subangulatus. 
2 a. A specimen of large size, and greater than the ordinary length. 
2 b. Two fragments of smaller size. 
Fig. 3. 410. 9. Pal^eophycus -? 
Fig. 4 a, b , & 5. Roots of some marine 'plants ? 
Fig. 6. 413. 3. Rusophycus pudicus 
(Pag. 23) 
(Pag. 23.) 
(Pag. 22.) 
(Pag. 25.) 
(Pag. 24.) 
