Vll 



LIST OF PLATES. 



1. Volvox ...... 



2. Microscopic occupants of a leaf of duck-weed 



3. Vegetable forms of microscopic organisms 



4. Amceba 



5. Khizopods 



6. Figure of noctiluca miliaris 



7. Sponges . 



8. Framework of sponge 



9. Flint crystals of sponge 



10. Sponge in action 



11. Halichondi-ia oculata . 



12. Paramecium, &c. 



13. Figure of swan-neck, and its divisions 



14. Figure of coleps and chilomonas 



15. Figure of vorticellce 



16. Figm-e of vaginicxDla 



17. Long-armed hydra 



18. Hydra vividis . 



19. Coryne 



20. Figure of tubularia indivisa 



21. Figure of sertularia operculata 



22. Figm-e of laomedea . 



23. Sea-blubber 



24. Figure of sarsia . 



25. Figure of thaumantias 



26. VeleUa .... 



27. Cydippe .... 



28. Food of the whale 



29. Physalis .... 



30. Figure of turris and its young 



31. Machepores 



32. Alcyon . . . 

 83. Figure of polypes of alcyon 



34. Madrepore 



35. Orifice of madrepore . 



36. Eed coral .... 



37. Isis 



38. Sea-fan and sea-pen . 

 S9. Organ-])ipe coral 

 40. Figure of actinia 



