Xll 



Contents. 



CHAPTER V. 



I' AGE 



Infusion- Animals -Luminous Animalcules Summary of 

 the Forms in Sub-kingdom I 



CHAPTER VI. 

 Sub-kingdom 2. Sponges 



CHAPTER VII. 



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

 Medusae 3 2 



'CHAPTER VIII. 

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



CHAPTER IX. 



Sub-kingdom 4. Echinodermata : S Lone-Lilies Feather- 

 Stars Starfishes * . . . * 47 



CHAPTER X. 



Sea Urchins Sea Cucumbers Summary of Forms in- 

 cluded in Sub-kingdom 4 5 2 



CHAPTER XI. 



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

 Flukes Round and Thread- Worms . . .57 



CHAPTER XII. 



Wheel-Animalcules Spoon- Worms -Leeches. . . 66 



