LIST OF ILLUSTRATIONS 



FIGURE PAGE 



1. Ameba i 



2. Trypanosome 3 



3. Victim of sleeping sickness 4 



4. Diagram to illustrate the life-history of the malarial parasite 5 



5. Negri bodies 8 



6. Tests of foraminifera 10 



7. Colony of simple sponges 1 1 



8. Colony of Obelia 15 



9. Three Scyphozoa 16 



10. Sea anemone .' 17 



11. Ctenophora 18 



12. An atoll 19 



13. Starfish 21 



14. Sea urchin 22 



15. Sea urchin with spines removed 23 



16. Sea cucumber 23 



17. Serpent star 24 



18. Crinoid 25 



19. Planaria 26 



20. Human tapeworm 28 



21. Liver fluke 29 



22. Parts of Ascaris lumbricoides 31 



23. Cross section of Ascaris lumbricoides 32 



24. Dissection of Ascaris lumbricoides 33 



25. Hookworm 34 



26. Trichinella spiralis 37 



27. Leech 41 



28. Diagram of leech 42 



29. Dissection of oyster 46 



30. Bed of marketable oysters 48 



31. Oyster shell and pipe, with attached oysters 49 



32. Tangle for collecting starfish, etc 50 



33. Oyster tongs in use 51 



34. Oyster dredge in use 52 



35. Long-neck clam 53 



36. Clam beach and rake 54 



37. Long-neck clams from one square foot of flat 55 



38. Hard-shell clam 56 



xiii 



