336 



GENERAL INDEX 



Nematocyst, function, 105, sqq. 

 Nervous system, development, 217, 



sqq. 

 Nest-building, 255, sqq. 

 Nutrition of marine organisms, 179 



plants, 180, sqq. 



marine animals, 183, sqq. 



shore organisms, 188 



shore animals, 190, sqq. 



Otocyst, function, 225, 226 



Palolo worms, 265 



Parasitic chain, 144 



Parasitism, 5, 132, sqq., 139, sqq. 



Pearls, formation of, 148 



Pedicellariae, function, 88, 107, sqq., 



191, 224 

 Poison devices, animal, 105, sqq. 

 Physiography of sea-shore, 20, sqq. 

 Pools, as habitat, 61 

 Protective resemblance, 94, sqq. 



Radula (of gasteropods), function, 



1 94-5 

 Regeneration, power of, 115-6, 121, 



131 

 Reproduction, 246, sqq. 



adaptive phenomena, 248 

 Respiration of shore animals, 200, 



sqq. 

 Rhythmic behaviour, 239, sqq. 



Salinity, variation, effects, 79, sqq. 



Saprophytes, 180 



Scavengers, sea, 189, 192 



Sea-gulls, 289-90 



Sea-water, composition of, 21, sqq. 



effect on, of vegetation, 24 



of light, 25 



of temperature, 25, 75, sqq. 



freezing of, 26 



circulation of (British), 31 



Sea-water, salinity, variation, 79, sqq. 



nutritive elements in, 181-2, 

 186 



oxygen-content, 200 



pollution of, 298-9 

 Seaweeds ; see Algae (Index of 

 Names). 



manurial use, 294, sqq. 

 Self-evisceration, 127-8 

 Sewage, effects, 298-9 

 Siphons (of molluscs), function, 212 

 Sloke, 293 

 Spawning, 246, sqq. 

 Statocyst, function, 225 

 Struggle for existence, 53, sqq. 

 Surveying, shore, method of, 312, 



sqq. 

 Symbiosis, 5, 132, sqq., 149-50 



Temperature of sea-water, 25 



variation, effects, 75, sqq. 

 Tides, the, causation and effect, 27, 



sqq., 60 

 Trepang, 288 

 Tropisms, 231 

 Tubes, construction, 102-3, 241, sqq. 



Vegetation (marine) and alkalinity, 



as animal habitat, 61 

 Vibraculum, function, 87 



Wampum, 300 



Wave action, effect on shore, 32, sqq. 



Wave-impact, effect on shore forms, 



66, sqq. 

 Weapons, animal, 105, sqq. 



Zones of marine habitat, 8, sqq. 



particular classifications of, 

 12, sqq., 35, sqq., 40, 50, 

 sqq. 



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