Contents. 



CHAPTER V. 



PAGB 



Infusion-Animals Luminous Animalcules Summary of 

 the Forms in Sub-kingdom I 25 



CHAPTER VI. 

 Sub-kingdom 2. Sponges ...... 28 



CHAPTER VII. 



Sub-kingdom 3. Ccelenterate Animals : Hydras Sea-Firs, 

 Medusae 52 



CHAPTER VIII. 



Sea- Anemones Corals ' Dead Men's Toes ' Sea-Pens . 41 



CHAPTER IX. 



Sub-kingdom 4. Echinodermata : Stone-Lilies Feather- 

 StarsStarfishes 47 



CHAPTER X. 



Sea Urchins Sea Cucumbers Summary of Forms in- 

 cluded in Sub-kingdom 4 52 



CHAPTER XL 



Sub-kingdom 5. Worms : Turbellarians Tape- Worms- 

 Flukes Round and Thread- Worms .... 57 



CHAPTER XII. 



Wheel-Animalcules Spoon-WormsLeeches. . . 66 



