128 MILLEPORA. 



of a marine animal fubftarree growing on a heath, many- 

 miles from the fea, is, I hope, fully demonftrated. 



XII. MILLEPORA. MILLEPORE CORAL. 



Animal cr efc ens plant <b This is an animal that grows 

 facie. in the form of a plant. 



Stirps fxa, lapidea [co- The ftem is ftony, like co- 



r allium) plerumque ra- ral, and fixt by its bafe ; it is 

 mofa> poris turbinatis vel moft commonly branched, and 

 cylindrkis per tufa \ full of top-fhaped or cylin- 



drical cells. 

 Polypos HydrceformeS) Thefe fend forth polype- 



modo tubceformes (Donati) like fuckers, like the common 

 exferens. frefh-water one, and fome of 



them Polypes of a trumpet- 

 fbape (as Donati obferves). 



The great Linnaeus has with propriety brought the 

 ftony Efcharas of other authors to this genus, to which 

 they naturally belong ; and has constituted a genus for 

 the foft membranaceous Efcharas, under the title of 

 Fluftras, which I have called, in Englifh, Sea-Matts, as 

 having that appearance when magnified. 



The particular ftruclure of feveral fpecies of this genus 

 differs much from one another, as will appear from the 

 following diviiions : 



i) Thofe that are almoft folid, whofe pores are fcarcely 

 vifible without being highly magnified ; but yet, on be- 

 ing broken acrofs, difcover plainly a cellular ftrutiure, 

 as has been fhewn in Vol. 57. of the Philofophical Tranf- 

 ^ aclions, 



