302 F. B. Meek on new Silurian Crinoids and Shells. 
the stages of development of some Crinoid, which, if known in its 
adult condition, is supposed to be an entirely distinct type. ‘The 
other is that the disks, as we now see them growing fast to other 
down to others less than a tenth of an inch in diameter, all alike 
growing fast to other bodies by the side opposite the column-Hxe 
appendage, seems to demonstrate that this is their mode of growth 
from the first.* 
Tn view of all that is now known of this curious fossil, it seems 
i inion on 
be prepared for the reports of the Ohio Geological Survey. ped 
> _ . * L cs 
Cincinnati group of the Lower Silurian, near Cincinnati, Ohio. 
_,. Ina few very rare cases, the disk has been found detached, and showing a 
flat side marked by very regular radiating striae. 
pon which they grew and that the radiating 
lize within posed by wea’ ring, as we also Some 
specimens, 
