INDEX. 



Air-bladders in Plankton, 90. 

 Alcyonarians of Coral Reef, 



67. 



Alcyonium, 42. 

 Alternation of Generations, 



31, 93, 99. 

 Angler fish, 39. 

 Azoic, without animal life, 9. 



B. 



Barbel, a tentacle on the 



lower jaw of Fish such as 



the Cod, 52, 139. 

 Barnacles. 40 ; on Whale. 



159. 

 Benthos, the animals living on 



the bottom of the sea, 110. 

 Blue-shark, 121. 

 Blue-whale, 126. 

 Bonito, 121. 

 Boring Mollusc, 43. 

 Bopyrus, 170. 

 Brachiolaria, 112. 



C. 



Caller-crab, 76. 



Cetacea, 125. 



Cilia, minute vibratile hair- 

 like processes on the body 

 of some small animals, 111, 



Cirripedia, a group of Crus- 

 tacea to which the Barnacles 

 belong, 168. 

 180 



Cod-fish Family, 52. 



Coffer-fish, 63. 



Colour in shallow water ani- 

 mals, 31 ; in deep sea ani- 

 mals, 137. 



Copepods, 86 ; parasitic, 169. 



Corals, 57. 



Coral and Worm, 151. 



Coral-reefs, 56 ; shells of, 65 ; 

 Anemones of, 66 ; alcyon- 

 arians of, 67 ; different 

 forms of, 68 ; Fauna, of outer 

 edge of, 78. 



Crab-galls, 158. 



Crab and Sea-weed, 162. 



Crustaceans of the rocks, 48. 



Ctenophores, a group of Coe- 

 lenterates, 85. 



Currents, 16. 



Cuttle-fish, 49. 



D. 



Density of Sea Water, 13. 

 Depths of the Sea, 10. 

 Diatoms, minute unicellular, 

 plants, 23. 



E. 



Electric Organ, 37. 



Eyes, 27 ; of Scallops, 29 ; of 

 larval Tunicate, 30 ; of 

 Medusae, 30 ; of deep sea 

 animals, 138. 



; 



