INDEX 



391 



Seeds cast up by waves, 171, 296 

 Semper, Prof., Darwin's letters to, 

 217 



on *' Subsidence," 234 

 Serpent, H.M.S., visit of, 29 

 Settlers, original, 16 

 Sharks, 320, 347 

 Sheep, introduction of, 297 

 Ships as carriers of fauna, 296 



fauna of, 302 



insects flying aboard, 311 

 Shoaling of lagoon, 187, 275 

 Shores of lagoon, 172 

 Showers, influence of, 183 

 Silt cast off by corals, 243 



eflfects of, on corals, 123, 189 

 Silting of lagoon, 125 

 /S'kada buoni, 53 

 Slamatan, 53 

 Slope of lagoon reef, 197 

 Slopes, submarine, 150 

 Slowness of coral growth, 193 

 Snakes, arrival of, in atoll, 295 

 Solitary corals, 59 



repair of, 104 

 Solution, theory of, 222 

 Somaliland, currents to, 294 

 Soundings of Indian Ocean, 145 

 Spawning of corals, 62 

 Specific distinctions of corals, 83 

 Specific gravity of sea- water, 129 

 Spherical growth of corals, 72 

 S'pia Dupong, wife of Ross II., 31 

 Spicer, Rev. E. C, visit of, 215 

 Spiders, 306, 366 

 Spirits, belief in, 45 



ofi'erings to, 53 

 Stinging corals, 133 

 Stones carried on floating logs, 



290 

 Storms, influence of, 261, 263, 283 

 Submarine basis of atoll, 144 



slope of atoll, 146 

 Subsidence, absence of signs of, 280 



theory of, 216, 218 

 Surf, influence of, on corals, 158 



Sword-fish, 322, 347 

 Symmetrical zooids, 82 

 Sympathy between zooids, 106 



Talbot, Mr. A. P., visit of, 40 

 Talus slopes, extension of, 277 

 Tameness of birds, 300 

 Telegraph ships, soundings by, 145 



station, 44 

 Temperature of islands, 207 



of lagoon, 200 

 Tendencies of coral growth, 86 

 Tern, the white, 339 

 Tetradonts, 327, 347 

 Theories of atoll formation, 212 

 Thunder and lightning, 211 

 Ticks left by sheep, 297 

 Tide excursion, influence on height 

 of islands, 262 



variation of, 199 

 Tomboro, eruption of, 291 

 Tombstones, form of, 55 

 Trade winds, 201 



influence on atoll form, 256 

 Tiea-trunks, floating, 289 

 Triangular islands, 4, 138 

 Turk Reef, 195 



Types of coral growth, alterations of, 

 115 



distribution of, 158 



in lagoon, 191 

 Ti/phlops hraminus, 290, 346 



Uclung clarat, 316 



" Undecided " forms of corals, 131 



Unreliability of signs of change in 



atolls, 199 

 Upward land movements, 281 



Vanderwadl, 11 

 Variability of corals, 101 

 Vegetable soil, 179 

 Vegetation, influence of, on land 

 formation, 267 



of islands, 179, 371 



of lagoonlets, 177 



