I 4 LIST OF ILLUSTRATIONS. 



17. Ammonites communit ....... 103 



18. Side view of ditto ........ 103 



19. Pearly Nautilus ........ 104 



20. Section of Shell of Ammonite ..... 105 



21. Foliation of Ammonite Chambers ..... 106 



22. Ammonites Jnfrons ........ 167 



23. Side view of ditto ........ 107 



24. Ammonites oUutus ....... 108 



26. Side view of ditto ........ 108 



26. Ammonites lawtus ........ 109 



27. Ammonites varioosus and side view .... 9 



28. Amoeba .......... 121 



29. Rotifer mtlgari* ........ 123 



30. Melicerta ringens ........ 127 



31. Plumatetta repens ........ 129 



32. Coral. Favorites GotMandica ..... 143 



33. Tabulae of ditto ........ 143 



34. Coral. LitKostrotion basaltiforme , . . .145 



35. Halysites catenulatm ..... 147 



36. Astrcea ananus ..... .14 



37. Heliolites interstinctus ..... 149 



38. CoraUites of ditto ........ 150 



39. Coral. Section of Favosites cervicornis . . .151 



40. Isastrtea insignis ...... 163 



41. Thecosmilia annularis ..... 154 



42. ,, Smilotrichus granulatus ..... 154 



43. Lithareea ........ 165 



44. Desmid. Closterium striolatum ..... 181 



45. Volvox ylobator ........ 185 



46. Water-flea. Daphnia pulex. Male . . . .187 



