| _ Articulated CoRALLINES. 
be plainly feen. C, isa crofs Section of this Piece, to fhew 
the internal Figure and Difpofition of the Cells. 
The Joints of the Coralline rife in a dichotomous Order ; 
that is, by a conftant progreflive Divifion into two Parts, 
and are conneéted together by fhort Zuéuli of the fame Kind 
with thofe they took their Rife from. ' : 
Thefe Tubes in the Water are exeeding pliable, which 
make them move fo freely, without breaking in the violent 
Agitations of the Sea. — 
ies Shape of the Cells is not always of a Lozenge Fi- | 
gure: Sometimes we find them arched at Top, as at D; 
and fometimes of the Shape of a Coffin, as fome of the upper 
Cells at B. } 
When this Coralline has lain expofed for fome time on the 
Shore, it grows very hard, and white; and the Partitions 
~ between the Cells become thinner and more diftinét, as at 
Fig. ie) 
at Though the following Corallines differ in their Size, and 
Form of their Cells, and fome other Particulars, as their 
tubulous Roots; yet as they anfwer the general Definition 
of this Clafs, and feem to follow in the Order of Nature, I 
conneéted them together: That we may perceive the 
s, or Cells of this Clafs the more diftinétly, it is neceflary 
ve tg i ‘ : 
"they fhould be viewed immediately on their being taken out 
of the Sea; for as they dry, the cretaceous or coralline Mat- 
ter fhrinks, and unites the pore-like Cells on the Surface, 
fearcely: to be diftinguifhed from a polifhed Superticies, with- 
out the Help of the very beft Gialtest 640 * : : 
WR? “2 ; 4 Nee: 
F 
