298 TOILERS IN THE SEA. 



polype. This view seems to have the preponderance 

 of evidence in its favour. One author claims to 

 have traced the formation of a bud on the " brown 

 body," and, as it seemed, out of its very substance. 

 Mr. Hincks says that, " repeatedly I have seen gem- 

 mation taking place, in the closest proximity to the 

 surface of the " brown body," and the bud, as I was 

 fully persuaded at the time, was continuous with 

 it, and a growth out of it." " Another point my 

 observations seemed to me to have established, that 

 the polypes developed from the (so-called) germ 

 capsule, differ in appearance during their early stages 

 from those which are found in the young marginal 

 cells of the colony, and from other buds which occur 

 in the adult polype cell (Zocecid], The latter are 

 destitute of the reddish-brown colour, imparted to the 

 stomach wall at a later period by the biliary glands, 

 whilst the former, being a growth out of the brown 

 body, possess it from the first. To these views it 

 has been objected that the bud is not developed from 

 the " brown body," but from the living substance 

 which surrounds it ; and that at a certain stage the 

 bud approaches the " brown body," extends its sub- 

 stance over it, and finally lodges it in its stomach, 

 the walls of which completely close around it. Thus 

 engulfed, it serves as a store of nutriment for the 

 growing structure. As a summary of what appears 

 to have been ascertained, Mr. Hincks concludes. 



