7. Microscopic section of White Chalk.
8. Organisms in Atlantic Ooze.
9. Crinoidal marble.
10. Piece of Nummulitic limestone, Pyramids.
11. Microscopic section of Foraminiferal
limestone--Carboniferous, America.
12. Microscopic section of Lower Silurian limestone.
13. Microscopic section of oolitic limestone, Jurassic.
14. Microscopic section of oolitic limestone, Carboniferous.
15. Organisms in Barbadoes earth.
16. Organisms in Richmond earth.
17. Ideal section of the crust of the earth.
18. Unconformable junction of Chalk and Eocene rocks.
19. Erect trunk of a _Sigillaria_.
20. Diagrammatic section of the Laurentian rocks.
21. Microscopic section of Laurentian limestone.
22. Fragment of a mass of _Eozooen Canadense_.
23. Diagram illustrating the structure of _Eozooen_.
24. Microscopic section of _Eozooen Canadense_.
25. _Nonionina_ and _Gromia_.
26. Group of shells of living _Foraminifera_.
27. Diagrammatic section of Cambrian strata.
28. _Eophyton Linneanum_.
29. _Oldhamia antiqua_.
30. _Scolithus Canadensis_.
31. Group of Cambrian Trilobites.
32. Group of characteristic Cambrian fossils.
33. Fragment of _Dictyonema sociale_.
34. Generalised section of the Lower Silurian rocks
of Wales.
35. Generalised section of the Lower Silurian rocks
of North America.
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