BARNACLES. 
253 
of wrecked vessels, the sides of rocks, and other objects 
which afford a secure attachment. 
Each individual consists of a body enclosed in a shell, 
not unlike that of a mussel in figure, and of a fleshy 
worm-like stem or peduncle, the extremity of which is 
fixed to the object upon which the animal is stationed. 
This stem is tubular, tolerably firm, and has a fleshy feel ; 
BARNACLES. From nature. 
it is composed exteriorly of a fine coriaceous outer mem¬ 
brane, bedewed with a watery fluid, and beneath this, of 
an inner membrane of considerable density, apparently 
consisting of muscular fibres, running for the most part in 
