xxiv CONTENTS. 



PAGE 



of a Salpa. Vegetable and Animal Debris Dredged from Great Depths. 

 The Deep Sea, a High Road for the Distribution of Animals. Deep-Sea 

 Faunas and Alpine Floras Compared. Nature of the Deep-Sea Fauna a 

 source of Disappointment. Remarkable Deep-Sea Ascidian. Localities 

 specially Rich in Deep-Sea Forms. Relations of Deep-Sea Animals to One 

 Another. Phosphorescent Light in the Deep Sea. Colours of Deep-Sea 

 Animals. Cockroaches. Moths, Mosquitoes, House-flies, Crickets, Centi- 

 pedes and Rats on board the " Challenger." Plants on Board the Ship. Pet 

 Parrot, Cassowary, Ostriches, Tortoises, Spiders, Fur-Seal, and Goat 

 on Board. Adaptation to Sea Life. Smallness of the Earth's Surface. 

 Slow Rate of Travelling. Man and possibly Protoplasm existent on the 

 Earth alone. Necessity for Immediate .Scientific Investigation of Oceanic 

 Islands 49° 



INDEX 521 



