CARBONIFEROUS CRINOID “FINGERS” OR “‘BRANCHES.” 61 
ally fixed by a plaster-like cement with root-like processes round 
the edges, which are sometimes seen to form a rough network. 
From my specimens it cannot be said with certainty whether or 
not they indicate that it was the “ fingers ” which sprung from the 
top of the calyx (and by the aid of which the animal fed itself), 
or the jointed “branches” which grew from the sides of the 
column, or both, that had the grasping power. 
SPECIMENS EXHIBITED. 
1. Crinoid “fingers” or “ branches” twisted round the stems 
of Crinoids. 
2. “ Rootlets” of a Silurian Crinoid. 
3. Corallina officinalis, Linn,, showing the calcareous plaster 
with which it is fixed to stones. 
4. “Cups” of the Crinoids to which the grasping “ fingers” 
probably belonged. 
5. Bases of young Carboniferous Crinoids. 
Figure a. Part of Crinoid “finger” or “branch” twisted 
three times round a Crinoid stem. Carboni- 
ferous. 
B. Crinoid “root” twisted round Crinoid stem. 
Carboniferous. . 
c. Base of Crinoid stem fixed by “ rooting” processes 
toa Sun Coral. Silurian. 

