70 Natural Hiftory 



thefe Leaves proceed other ftill fmaller foHaceous Ramifica- 

 tions, many of which feem to be connedled at the lower Part 

 by Tiihuli, as in the Corallines ; by which Means they can 

 ply to and fro more freely in the Water. 



Fig. ^, N^ I. gives the natural Appearance of this Co- 

 ralline. 



Fig. A^ reprefents two Leaves, with their Tubuli and Cells 

 mao-nified. 



Fig. 5, is a crofs Sedion of one of the Leaves at A^ View- 

 ing the Partition, and inner Form of the Cells. 



plate xxtx.N^. 2. Efchara foliacea, Millepora^ fponglofui cellulis ar- 

 f ]g. a. A. Qiiath alternn utriiiqiie inJiruSia, 



Fucus telam liiieam^ fericeamve^ textura fua cemulans, 

 R. S.N^Q. p. 42. 



Broad-leaved Hornwrack, 



This Coralline, when frefh taken out of the Sea, is of a 

 fpongy foft Texture, and fmells very fifhy j but when it has 

 lain for fome time on the Shore, it becomes ftiffand horny, 

 like fome Sort of withered Leaves, Both Surfaces, when ex- 

 amined by Glaffes, appear to be covered with Cells ; and, 

 when a Piece of it is cut acrofs, one may difcover the thin 

 Membrane that ferves as a Bafe to the Cells of each Surface. 



The Form of the Cells is very remarkable, each one being 

 arched at the Top, and contracted a little at the lower Part 

 of the Sides, to make Way for the Arches of the two next 

 adjoining Cells, fo that, by this particular Conftrudlion, no 

 Room is loft. The Entrance of the Cells is immediately 

 under the Arch of each Cell, and the Walls of the Cells 

 feem to be fortified with Spines. 



The 



