LIST OF ILLUSTRATIONS. 



FIG. 



1. Cast of Trigonia longa, . 



2. Microscopic section of the 



wood of a fossil Conifer, 



3. Microscopic section of the 



wood of the Larch, 



4. Section of Carboniferous 



strata, Kinghorn, Fife, 



5. Diagram illustrating the 



formation of stratified 

 deposits, 



6. Microscopic section of a 



calcareous breccia, 



7. Microscopic section of 



White Chalk, . 



8. Organisms in Atlantic 



Ooze, 



9. Crinoidal marble, . 



10. Piece of Nummulitic lime- 



stone, Pyramids, 



11. Microscopic section of Fo- 



raminiferal limestone — 

 Carboniferous, Amer- 

 ica, .... 



12. Microscopic section of 



Lower Silurian lime- 

 stone, 



13. Microscopic section of 



oolitic limestone, Ju- 

 rassic, 



14. Microscopic section of 



ooolitic limestone, Car- 

 boniferous, 



15. Organisms in Barbadoes 



earth, 



16. Organisms in Richmond 



earth, 



17. Ideal section of the crust 



of the earth. 



PAGE 



12 



13 



17 



22 



23 



24 



25 



27 



27 



29 



30 

 33 

 33 



43 



FIG. 

 18. 



19. 



20. 



21. 



22. 



23. 

 24. 



25- 

 26. 



27. 



28. 

 29. 

 30. 

 31. 



32. 



33- 

 34. 



35. 



36. 

 37- 

 38. 

 39. 



Unconformable junction 



of Chalk and Eocene 



rocks. 

 Erect trunk of a. Sigt/Zarm, 

 Diagrammatic section of 



the Laurentian rocks, 

 Microscopic section of 



Laurentian limestone. 

 Fragment of a mass of 



Eozobn Canadense, 

 Diagram illustrating the 



structure of Eozoon, 

 Microscopic section of 



Eozoon Canadense, 

 Nonionina and Grotnia, . 

 Group of shells of living 



Foraminifera, 

 Diagrammatic section of 



Cambrian strata, 

 Eophyton Linneanum^ 

 Oldhajnia antiqua, 

 Scolithus Canadensis, 

 Group of Cambrian Trilo- 



bites. 

 Group of characteristic 



Cambrian fossils, 

 Fragment of Dictyonema 



sociale, 

 Generalised section of the 



Lower Silurian rocks 



of Wales, . 

 Generalised section of the 



Lower Silurian rocks 



of North America, 

 Licrophycus Ottawaensis, 

 Astylospongia prcemorsa, . 

 Stro7natopora rugosa. 



49 

 54 



66 



67 

 69 

 70 



71 



72 



73 



78 

 81 

 82 

 83 



85 

 88 



89 



94 



96 



97 

 98 



99 



Dichograptus odobrachiatus , i o i 



