Xll LIST OP ILLUSTRATIONS. 



FIG. PAGE 



14. ENTOSOLENIA 62 



15. BILOCULINA 62 



16. POLYSTOMELLA 62 



17. POLYMORPHINA . . 63 



18. ARCH^EOSPHERIN^E . . . . v . . . 67 



19. NUMMULITES . . .73 



20. CALCARINA . . . .' - - . ..... . 73 



21. FORAMINIFERAL ROCK-BUILDERS 75 



21a. CASTS OF CELLS. OF EOZOON hi, . . . .92 



22. MODES OP MINERALIZATION . . . . ' . .96 



23. SILURIAN ORGANIC LIMESTONE ..... 98 



24. WALL OF EOZOON PENETRATED WITH CANALS . . 98 



25. CRINOID INFILTRATED WITH SILICATE .... 103 



26. SHELL INFILTRATED WITH SILICATE . . . .104 



27. DIAGRAM OF PROPER WALL, ETC 106 



28. 29. CASTS OF CANALS 107 



30. EOZOON FROM TUDOR Ill 



31. ACERVULINE VARIETY OF EOZOON 135 



32. 33, 34. ARCH^OSPHERIN^B 137, 138 



35. ANNELID BURROWS 140 



36. ARCH^EOSPHERIN^ 148 



37. EozooN BAVARICUM 149 



38. 39, 40. ARCH^EOCYATHUS ..... 152, 153 



41. ARCH^OCYATHUS (STRUCTURE OF) 154 



42. STROMATOPORA 157 



43. STROMATOPORA (STRUCTURE OF) 158 



44. CAUNOPORA 159 



45. CCENOSTROMA 160 



46. EECEPTACULITES 162 



47, 48. EECEPTACULITES (STRUCTURE OF) . . . . 163 

 49. LAMINAE OF EOZOON 176 



