po Natural Hiftory 



CHAP. X. 



Of Tubular Corals, ^c. 



I shall here add an Account of fucli other Marine Bo- 

 dies, as have cafually occurred. And, firft, iliall give 

 a Defcription of an irregular Mafs of Sand, which appears 

 to have been cemented together by a particular Species of 

 Sea- Worms. I have called it, 



Plate Tubularia arenofa An^lica. 



Fig. A. JB.'c. E?!gIiJJj tubular fandy Coral. 



This is found very often, in Pieces of confiderable Magni- 

 tude, on the Coaft near Tarmotah, about Low- water Mark, 

 and on the Shores near T)ieppe in Fra7tce ; from which lafh 

 Place the Specimen, Part of which is exhibited, in its full 

 Bignefs, in Plate XXXVI.*Fig. yf, was brought to Mr. E?na- 

 nuel Me7idez da Cojla^ F. R. S. who was fo obliging as to fend 

 it to me. The whole Specimen was about fix Inches long, 

 five broad, and three thick, of a dark fandy Colour, brittle 

 Texture, rather light than heavy, porous on all Sides, but 

 on fome diftinguiilied by peculiar Apertures. 



The upper Part of the Mafs, which is here called its 

 Front v^, is of a moft remarkable Fabric. One may com- 

 pare it to a Number of fmall, and fomewhat flatted. Fun- 

 nels, placed obliquely one above another, and fo clofc, that 

 the upper Edges of every lower Tier are hid by the lower 

 Edge of thofe above them ; and are placed fo obliquely, as 

 that the Hole at the Bottom of each, which may be called 

 the Tube of the Funnel, may plainly be feen : This Tube 

 is continued from the Bottom of the Cup of the Funnel to 



about 



