830 HISTORY OF BRITISH ZOOPHYTES. 
states, ‘ My observations show that this communication is 
through the intertentacular organ, and that whatever pur- 
pose it may subserve besides, in the economy of the Bryo- 
zoon, it is at certain seasons the channel through which 
cercari@ are ejected from the visceral cavity—The con- 
nection proved to exist between the ciliated organ and the 
cercarie—which must be regarded as spermatozoic bodies— 
may be accepted as conclusive evidence that it is subservient 
in some way to the function of generation.” 
Since I wrote the above, I put into a tumbler of sea- 
water a small fragment of Odonthalia dentata, on which I 
saw there were zoophytes. On applying a pocket-lens, I 
observed a very perfect specimen of the small creeping va- 
riety of Sertularia rugosa, and I was much struck with the 
sculpture of the large vesicles, resembling the finest cut 
crystal vases. The pretty cells were closely set in alternate 
order, and from several of them the purely white polypes 
were fully expanded. Then I observed a beautiful little 
specimen of Coryne pusilla, var. muscoides, with many live 
polypes, intermingled with oval vesicles. My attention 
was then caught by Membranipora pilosa, a very common 
object, but even more interesting than either of the 
others, for there was more life about it. The little 
