CONTENTS. 



CHAPTER I. 

 INTRODUCTION. 



Page 

 Classification of the Animal Creation i 



CHAPTER II. 

 FIRST DIVISION OF INVERTEBRATE ANIMALS. 



RADIATED ANIMALS 10 



ROOT-FOOTED ANIMALCULES. RHIZOPODA... 10 



Amoeba n 



Rhizopods ii 



Foraminifera n 



Phosphorescence of the Sea 12 



Noctiluca miliaris 13 



Importance of the Rhizopods in Creation 14 



CHAPTER III. 



SPONGES 



History of the Sponge 



Dr. Grant's Observations on a living 



Sponge 17 



Origin of Flints 19 



"It 



CHAPTER IV. 



CILIATED ANIMALCULES. INFUSORIA 19 



Remarkable mode of propagation 21 



Importance in the economy of Nature ... 24 



CHAPTER V. 



CORALLINES. HYDROZOA 24 



Indefinite reproduction 26 



Lasso-threads 27 



Club Hydra 27 



Tube Hydra 28 



Sea-Wreaths 28 



Bell Corallines 29 



Acalephas 29 



Faculty of stinging 30 



Phosphorescence 31 



Propagation by Offshoots 32 



Tail of Velella 32 



Corallines (continued). 



Page 



Globe Beroe 33 



Nature's steamboat 33 



Varied Colour of the Sea 34 



Food of the Whale 34 



Hydrostatic Acalephae 35 



Portuguese Man-of-war 35 



Long Cables 35 



Relationship of Hydrse to Medusae 36 



Hydra tuba 36 



Campanularian Zoophytes 36 



CHAPTER VI. 



CORALS. ANTHOZOA 37 



Gardens of the Sea 37 



Polype Flowers 37 



Alcyons 38 



Gradual development 39 



Mouth surrounded by Tentacles 39 



Madrepores 39 



Massive Skeleton of 40 



Stone-making Corals 40 



Growth of Coral Reefs 41 



Coral Islands 41 



True Corals 42 



Red Coral, Coral fishing 42 



Mare's-tail Coral 43 



Variety of form of Coral 43 



Bark-bearing Corals 43 



Sea-Pens 43 



Organ-pipe Coral, its brilliant Colours ... 44 



Actiniae 44 



Like Compound Flowers 44 



Actinia gemmacea 45 



Venomous Lasso-threads 47 



Effects of division of Actiniae 47 



Mushroom Corals 47 



CHAPTER VII. 



ECHINODERMATA 48 



Encrinites 49 



Their abundance in a Fossil state 49 



Feather-star 50 



