PLATE XVI. CONTINUED. 
Fig. 11. A body, apparently of ferruginous lime-stone, having much of the appearance of 
a pentacrinal vertebra. These bodies are worn by some of the Africans, strung 
together and forming necklaces. 
12. The perpendicular section of a column, from Bradford, in which are seen the 
superadded coats, such as are also seen on the specimen. Fig. 6. In this 
specimen they are seen spreading out and giving an increase of thickness to the 
lower part of the column. 
13. The perpendicular section of a beautiful agatine column, from Soissons, in which 
the superadded coats extending at the base of the column are very plainly 
perceived, forming a body well calculated to be the base or organ of attachment 
of this species of encrinite. 
14. The section of the side of a column, from Bradford, in which the circumstances 
noticed in the preceding specimen are very evident.* 
15. A section of pentacrinal marble, shewing longitudinal sections of the vertebral 
columns. 
16. Vertebral columns, variously contorted, and connected together by lateral digital 
processes. 
* Since the finishing of this Plate, I have procured a transverse section of the base of this 
species of encrinite, from Pfeffingen. It seems to yield similar appearances, except being 
three times the size, and of a purple colour, inclining to red, with those which a transverse 
section of the lower part of the French fossil. Fig. 13, might give. 
