~ Stalks divided into Joints by {mall Rings; Pa Be 
Plate XII. 
Fig. & 2B. 
- nified, 
of the Water without Injury, from their bee Bae on! Foot / 
{talks formed like Screws. | i 
of the Joints appear to be knobbed ; upon thefé ref 
‘cles in an alternate Order, fupported by {crew-like Fc 
Natural Hiftory of ay 
ceed little Footftalks twifted like a Screw, that fupport 
cles of an oval Shape ; fome with a {mall Opening at the 
and fome quite open. ‘This is found in great Abundai 
the South-Weft Coaft of Exg/and, and feems moft curiouly 
contrived, from its Struéture, to refift the Violence : 
Waves, all its Joints being furnifhed with Springs. Its Vi cles 
are alfo formed fo as to yield eafily to every violent Impulle 
Fig. a, N°. 18. in Plate XI. is the ¢Appestane ey m 
in their natural Size. "4 
- Fig. 4, thews Part of a Branch magnified, 
N°.19. | Corallina minor repens age) ae oft, arti : ou / 
veficulis alternis inftru€fo. 
" Knotted-thread Coralline. 
This: creeping Coralline is generally foal adh anes 1g to the 
poddéd Fucus, from whence it throws out little jointed and 
waved tender Branches, about an Inch long: ‘The UP] er Patt 
a 
The Shape of the Veficles i is like an Oil-Jar with a Neck 
This Comlines was found at Dosen andI have | 
ceived fome Specimens from ei ifs fo that I belie 
not uncommon on our Coafts. 
Fig. 4, N°. rg, Plate XII. was drawn’ from anal Ce 
the podded. Fucus, with feveral Branches of this 
growing upon it. 
Fig, B, gives ae ye of a final I Branch 0 
1 sity 
