TABULAR SUMMARIES. i. Abridged Table of Fossiliferous Strata " 8 2. General Tables of Fossiliferous Strata . . . .9-14 3. Palaeozoic Rocks of North America . . . . • 15 4. Cambrian Portion of British Lower Palaeozoic Strata . . 34 5, Lower Lingula Flags, Fauna of. . . . . . -49 6. Upper Lingula Flags, Fauna of. ..... . 51 7. Summary of Lower Cambrian Life 56 8. Comparison of Faunal Values in four Cambrian Areas . . 66 9. Cambrian and Silurian Brachiopoda, Comparison through Four Genera 87 10. Cambrian and Silurian Pelecypoda, Comparison through Six Genera • 88 11. Community of Caradoc and Llandovery Species through Four Classes 9° 12. Llandovery Species, Geographical Analysis of . . . -94 13. Lower Llandovery Rocks, Fauna of 98 14. Faunal Relationship between the Caradoc and Llandovery Groups 106 15. Ludlow Actinozoa, Geographical Distribution of, in Eight Localities 134 15a. Cambrian and Silurian Strata, Tabular View, with Physical and Palaeontological Particulars 139-141 16. General Tables of the Organic Remains of the Lower Paleozoic Strata 142-149 17. Summary of Lower Palaeozoic Life 150 18. Old Red Sandstone of Caithness, Subdivisions of . . .162 19. Devonian Rocks of North Devon, Tabular View, with Physical and Palaeontological Particulars 20. Representative Formations : Devonian and Old Red Sandstone 190 21. Palaeozoic Series of the Boulonnais, with British Equivalents . 193 22. European and American Equivalents of the Three Stages of British Devonian Rocks 196 23. Correlation of Devonian and Old Red Sandstone in Six Localities 197 24. Summary of Middle Palaeozoic Life 205 25. General Tables of the Organic Remains of the Middle Palaeozoic Strata 206-211