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other bodies. The author of Corallia Baltica very justly observes that, 
notwithstanding the strength which the opinion derives from this cir- 
cumstance, there undoubtedly exists sufficient reason for dissenting 
from it. 
The fossil, Plate IV. Fig. 10, from Gothland, possesses, like that at 
Fig. 11, all the characters of the porpital madrepore on its disk, but 
having its body extended into a conical shape, forms, as it were, the 
link which connects into one species, the porpital madrepore and the 
madrepore just described. 
The most curious fossil which I have seen of this kind, is one which 
I obtained at the sale of the Leverian Museum. It has the complete 
external characters of the porpital madrepore ; but is perfectly pellucid, 
being formed of a fine transparent calcareous spar. 
These corallites have received various names from the older orycto- 
logists. When the turbinated madrepore was formed of conical or 
cylindrical pieces connected by seeming articulations, and possessing 
a stellated cavity at one of its terminations, it was named hippurites 
coraUinus, calix hyppuriticus, and corallia geniculata. By Bromell, 
Langius, and others, all those of a more compressed form have been 
named fungites ; and that, not merely from their resemblance to mush- 
rooms, but from their having been actually supposed to be those 
vegetable substances, in a state of petrifaction. Dr. Plot, and others, 
have distinguished those which have possessed more of a cylindrical 
form by the name of columelli ; and Lhwydd has applied to them the 
name of columneta : both terms being diminutives of coluinna, and 
intended to mark their resemblance to a little pillar. From the similitude 
which they bear to horns they have also been termed ceratitcB recti et 
incurvati. Dr. Woodward comprehends both the turbinated and the 
porpital madrepore under the term mycetita, coralloides ; distinguishing 
the former into mycetitce conoides, seu calyciformes, and the latter into 
mycetitce discoides. 
