330 SUMMARY OF THE CONTENTS OF VOL. II. 



On what has been called the revivification of Rotiferae ; views of 

 Ehrenberg and Doyere. According to Payen, germs of Crypto- 

 gamia preserve their power of germination even after being ex- 

 to the highest temperatures 4547 



Diminution, if not entire suspension, of organic functions in the 

 winter sleep of animals belonging to the higher classes . 47, 48 



Summer sleep of animals in the tropical zone ; great dryness acts 

 like winter cold. Tenrecs, crocodiles, tortoises, and the Lepidosiren 

 of Eastern Africa. 48-51 



Anther dust or pollen; fertilization of flowers. The Coelebogyne 

 found to produce perfect seeds in England without any traces of 

 pollen being discovered 51 53 



The luminosity of the ocean produced by living luminous animals and 

 by decaying fibres and membranes of animals. Acalephse and 

 siliceous-shelled luminous Infusoria. Influence on the luminosity 

 of a stimulus applied to the nerves . . . . 53 60 



Pentastomes inhabiting the pulmonary cells of the rattle-snake of 

 Cumana ; . . . . . . . . . 60, 61 



Hock-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 Hey 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) .... 62 72 



Probable greatest depth of coral structures . . . 7275 



