ITS INCREASE. 221 



truding. Presently, these rods would simultaneously 

 open out into a bell, or funnel-like form, and you 

 would perceive each to be furnished with a double row 

 of cilia, pursuing their ceaseless chase, exactly as in 

 the Tubulipora. 



After a time, tin's solitary animal began to increase ; 

 not, however, as yet, by a process of proper generation, 

 viz., by the production of such a living, active, free- 

 swimming germ, as that which originated its own life : 

 this was an after-work, to be accomplished in good 

 time. The first act was a multiplication of its own 

 individuality, not the origination of a new race ; and 

 this was effected in a very plant-like manner. The 

 primary cell had been strengthening its hold by shoot- 

 ing out, on ah 1 sides of its base, delicate tubular fibres 

 of the common horny matter, which had crept along 

 the surface of the frond before the substance had yet 

 hardened, and had thus become so firmly adherent to 

 it, that no force short of the actual destruction of the 

 thread could have severed them. These creeping and 

 branching threads had constituted so many holdfasts, 

 which so far served the purpose of roots, though no 

 nutriment appears to have been absorbed by them. 



The anchorage being thus confirmed, a swelling 

 began to appear from one side of the cell, which 

 graduaUy developed itself into a bud, and finally into 

 a second cell of exactly the same form, dimensions, 

 and general character as the first. When completely 

 formed, the two were soldered, as it were, together 

 side by side, yet not exactly on the same level, the new 



