PLATE III. 
Fig. 1. A ramose tubiporite from Mendip Hills. The corallite, which is silicious, is 
imbedded in a dark lime-stone. 
2. Is taken from the twenty-seventh plate of Mr. Ellis’s Natural History of Zoophytes, 
and serves to shew the material difference which exists between the recent 
Tubipora Musica and the fossil tubipores, Plate I. Fig. 1. 
3. A fragment of black and white marble, which derives its marking from the tubi- 
porite, Fig. 1 . 
4. Chain coral (Tuhipora Catenulata) in its matrix ; but sufficiently cleared to shew 
its form and structure. 
5. A view, transversely, of the same tubiporite, imbedded in its matrix. 
6. A transverse section of the same fossil, placed between the eye and the light. 
