ANALYTICAL INDEX. 



321 



CHAPTER XII.— continued. 



Use of cilia unknown, 



Foreign matter excites their action, 



Amphitrite ventilabrum, 



Hydra and Actinia are carnivorous, 



Ascidia not carnivorous, 



Absorbs muddy solutions, 



Animalcula may be accidentally swallowed, 



Animals reconciled to unnatural food, 



Hunger — why devised, 



page 279 

 280 



ib. 



ib. 



ib. 

 281 



ib. 



ib. 



ib. 



VI. Senses, 



Sound gives no disturbance, 



Sight doubtful, 



Feeling acute, 



Smelling? 



Consciousness of danger and security, 



Volition, 



ib. 

 282 



ib. 



ib. 



ib. 

 283 



ib. 



VII. Propagation : Reproduction, 



Primordial germ or new depositation ? 



All theories difficult, 



Dr Martin Barry, 



(1.) Ovum, Germ, Embryo, 



Germ of unknown aspect, 



Ovum most familiar, 



Originally inert, 



Rendered prolific, 



Embryo, 



Early form vermicular, 



Ovum void of spontaneous motion, 



(2.) Planula, Gemmule, Spinula, 



Microscopic tadpole, 



It has no probable influence, 



Planula, 



Gemmule or corpusculum, 



Matrix, 



Spinula, .... 



Metamorphosis^ 



It does not produce new genera, 



Future elements in a germ, 



Gemmation, 



284 

 ib. 

 ib. 

 285 

 ib. 

 ib. 

 ib. 

 286 

 ib. 

 ib. 

 287 

 ib. 

 ib. 

 288 

 ib. 

 289 

 ib. 

 290 

 292 

 ib. 

 293 

 294 

 ib. 



VOL. II. 



2s 



