23 



CHAPTER II. 



SPONGES AND HYDROID ZOOPHYTES. 



" New buds and bulbs the living fabric sboots 

 On lengthening branches, and protruding roots, 

 Or on the father's side from bursting glands, 

 Th' adhering young its nascent form expands ; 

 In branching lines the parent-trunk adorns, 

 And parts, ere long, like plumage, hairs, or horns." — Darwin. 



NATURE AND HABITS OF SPONGES. — PROPAGATION. — APPEARANCE WHEN 

 LIVING. — GRANTIA BOTRTOIDES. — GRANTIA CILIATA. — EUPLECTELLA 

 ASPERGILLUM. — ZOOPHYTES DEFINED. — CLASSIFICATION. — HYDROID 

 ZOOPHYTES. — HYDRACTINEA ECHINATA. — CORYNE PUSILLA. — CORYNE 

 SESSILIS. — EUDENDRIUM RAMEUM. — TUBULARIA INDIVISA. — SERTULARIA 

 POLYGONALIS. — SERTULARIA ARGENTEA. — ANTENNULARIA ANTENN^NA. 

 — PLUMULARIA PINNATA. — LAOMEDEA DICHOTOMA. — LAOMEDEA GENICU- 

 LATA. — LAOMEDEA GELATINOSA. — CAMPANULARIA VOLUBILIS. — EU- 

 CRETIA CHELATA. — ANGUINA SPATULATA. — CELLULARIA CILIATA. 



The term Zoophytes , or Animal Plants, usually applied to 

 Corals, Sea Anemones, etc., might be applied with greater 

 propriety to a Sponge than to any other being. With its 



