PLATE VIII. 
Fig. 
1. A piece of lime-stone composed of minute round bodies, the nature of which is 
unknown ; but a magnified view of which is given. Fig, 12. 
2. A branch of a fossil coral of the Isis genus, from Sicily. 
3. A ramose milleporite, imbedded in a compact lime-stone, from Wiltshire ; a mag- 
nified representation of a part of the surface of which is shewn. Fig. 11. 
4. A joint of the trunk of the fossil Isis, a branch of which is represented. Fig. 2. 
5. The inferior part of a fungiform alcyonite, or spongite, the plicae of which are 
connected by anastamosings, similar to what takes place in the specimen, 
Plate XI. Fig. 3. 
6. Part of a ramose madreporite, from Switzerland . 
7. A joint of a fossil Isis, imbedded in its matrix. 
8. A pebble, from the Hackney gravel-pits, bearing marks of organization in its 
surface. This fossil obtains illustration from the one at Fig. 10. 
9. A ramose madreporite, imbedded in chalk, from France. 
10. A pebble, from the gravel-pits, Hackney, on the surface of which are small 
roundish bodies connected by minute fibres. 
11. A magnified representation of the surface of the milleporite. Fig. 3. 
12. A magnified representation of some of the minute bodies forming a great part of 
the mass of the fossil, Fig. 1. 
13. A magnified representation of a section of one of the round bodies, of which the 
following specimen is composed, 
14. A silicious stone, composed of round bodies, the nature of which is at present 
unknown. 
