ANALYTICAL INDEX, 



259 



CHAPTER II. — TuBULARiA ramea, 



It is rather a Sertularia, 



Eudendrium a less appropriate name, 



Specimen resembling an aged tree, 



Hydra with a single row of 24 tentacula, 



What are flexible zoophytes, 



Vorticellse, 



Inflexible compound stem, 



Hydrse of Tubularia ramea regenerated, 



Intervals of regeneration, 



Minute objects difficult to be followed 



Propagation, 



Vesicles, 



Single planula from a vesicle, 



Larva a less appropriate name, 



The planula is animated, 



Planula metamorphosing. 



Specimen bred from a planula, 



The same animal difierently represented, 



Competent artists rare, 



Representations often more definite than the truth, 



Tubularia ramea a beautiful object, 



Its prolific nature, .... 



Plates VI., VII., VIII., IX., X., explained, . 



§ 2. Tubularia (Sertularia) ramosa, 

 Hydra with from 6 to 14 tentacula. 

 Circulation of a fluid visible, 

 Currents irregular, 

 ■ Ascidia, ..... 



Medusa ocilia (8 tentacula). 

 Appearance and disappearance of Medusae, 

 Suspending objects in water convenient, 

 Nascent Medusa or pyrulum. 

 Evolution, .... 



Circulation between the pyrulum and hydra. 

 Irregular circulation in the lower animals. 

 Provisions of nature, 

 Grandeur of the universe, 

 All may be derived from simple elements, 

 Medusa Sexdecilia (16 tentacula), 

 Hydrse generate Medusae, 

 Plate XI. described, 



PAGE 50 



ib. 

 ib. 



51 



53 



ib. 



54 



ib. 



55 



56 



ib. 



57 



ib. 



58 



ib. 



59 



60 



ib. 



ib. 



ib. 



61 



62 



ib. 



ib. 



64 



ib. 



65 



66 



ib. 



ib. 



ib. 



ib. 



67 



ib. 



68 



69 



ib. 



ib. 



ib. 



70" 



71 



ib. 



