11 
?[ the pinnaj and stems are ruptured, the central pulp is 
‘ Wa ys partially, and frequently wholly expelled. How 
an these phenomena be satisfactorily explained, but by 
j'Pposing the existence of irritability and pressure in the 
*ath ? I have never obtained traces of vascularity, but 
. dferent sections of the trunk prove that sonic kind of action 
a Soing on there. If a cross section of a stem be taken from 
* >°ung part, it will be found of light texture and of equal 
t °"sistence throughout ; if lower, to be harder and darker, 
Specially towards its inner margin, and so in gradation to 
| li ; roots, where it will be found of a bard and somewhat 
little consistence throughout. The younger parts may be 
c , et d with safety, while the older portions are more rigid and 
j ( ari be bent only at the risk of breaking. From these facts, 
.■ “Ppears to be the most philosophic to consider the poly- 
‘ °tn as endowed with vitality and as forming with the 
vPes and pulp the entire animal. 
several species that grow near low water mark, will 
‘‘CflfTtoo omit onnnl.'s a f lwvlif nilion iron fl ir orritofon onrl 
t | ?* e times emit sparks of light when gently agitated, and 
hi: 
Hi)., ~~ ,1V ' l l Ul/UU J *'“ V ' 
i pears to arise from minute Entomastraca and AJacalephce 
•p. la is greatly increased, if the water be gently heated. 
ls is frequently the case with Serlularia pumila, and 
el 
'<jh so constantly infest them. 
Hie order is divided into three Families which contain 
^ ' etl Genera; and examples of each, except the fresh 
e r polype, are common on all parts of our coast. Indeed 
ip a r,t ;h are we in these beautiful productions, that the 
On,| lir 'iy °f those recognized as British are to be found in 
t h / ea s. The Generic dilfcrences, will be found at large in 
Hp ' r proper places in the following pages, where their 
^ ‘les are described, and need not therefore be given here. 
Up su . ni »iary of the whole will be found at the end, drawn 
of w ' l hout reference to the polype, to suit the convenience 
»i»b- ° se w ^° are not i»tim a t e ly acquainted with the 
u Ject. 
f*ol v 
TUBULARIADiE. 
fr 0 I'Pes gemmiparous, the gemmules naked, pullulating 
l “ e base of the tentacula. 
* en frip. 
CORYNE, Gaertner. 
Or ^^ aracier • Polypes fixed, single, naked, cylindrical 
f 0 c ‘ av iform, but contractile, the head with scattered fili- 
0 ^ 111 s ®ooth tentacula, mouth none ? 
.I ^AMATA. Body more or less cla' 
% 
'p,? t rl ® r ^an the body 
Solaria t,,.. 
clavate ; the tentacula 
Hi 
e ®. 
‘st. 
ar ia affinis, Turton’s Lin., vol. 4, p. GG8. Stewart’s 
v °l* 2, p. 438. Coryne Squamata, Fleming’s Brit. 
**’ ’*53. c. Multicornis, Templeton in Mag. of Nat. 
1 v °‘- 9 > p. 419. Johnston’s Brit. Zooph., p. 109, pi. 2. 
