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Show SUMMARY OF THE CONTENTS. 463 gamia preserve their power of germination even after being e:xpoe:ed to the highest temperatures . 255-257 Diminution, if not entire suspension, of organic functions in the winter sleep of animals belonging to the higher classes . 257 Summer sleep of animals in the tropical zone; great dryness acts like ·winter cold. Tenrecs, crocodiles, tortoises, and the Lepidosiren of Eastern Africa . . . . . . 257-259 Anther du t or pollen: fertilization of flowers. The Crelebogyne found to produce perfect seeds in England, without any traces of pollen being discovered . 259-260 The luminosity of the ocean produced by living luminous animals and by decaying fibres and membranes of animals. Acalephre and silicious-shelled luminous Infusoria. Influence on the luminosity of a timulus applied to tlie nerves . 261-266 Pentastomes inhabiting the pulmonary cells of the rattlesnake of Cumana . 266-267 ' Rock-building corals. The scaffolding or solid material which survives the death of the coral animals. More correct views of recent times. Shore reefs, encircling reefs, and lagoon islands. Atolls, or coral walls enclosing a lagoon. The coral islands to the south of Cuba, the Jardines del Rey of Columbus. The living gelatinous investment of the calcareous scaffolding of the coral trunks attracts fish and turtles in search of food. Singular mode of fishing by the aid of the Remora (the Echeneis naucrates) . 267-274 Probable greatest depth of coral structures . . 274-276 Besides much carbonate of lime and magnesia, Madrepores and Astrreas also contain some fluoric and phosphoric acids . 276-277 Oscillatory state of the bottom of the sea according to Darwin 277-278 Traditions of Samothrace. Irruptions of the sea. Mediterranean Sluice theory of Strato. Myth of Lyktonia, and the " Atlantis broken into fragments" . 278-281 On the causes which prevent the sinking down of clouds and precipi-tation taking place from them . . . . . . 281-282 Heat disengaged from the crust of the earth while solidifying. Hot currents of air which in the early ages of the earth, from frequent corrugations of the strata and elevations of land, may have been diffused in the atmosphere from temporary fissures . . 282-283 |