J. D. Dana on Zoophytes. 23 
We cite the following concluding remarks from the Report on 
Zoophytes, to which work reference may be made for fuller de- 
polyps changing to parent-polyps, and thus becoming the germs 
of eatiion which take ag See from the position of the 
budding-polyp ; the latter, branch generally by furcation at sum- 
mit, the size of the terminal cluster determining the diameter of, 
the branch, and indirectly occasioning the furcation. . ; 
In other species still, each polyp gives out its single polyp in 
succession, and the continued accumulation produces the rising 
