3 immediately fo as fcarce to be vifible. — 
Veficulated CoraLLINes. 
In September 1753, I received fome frefh Specimens of this 
Coralline in Salt-water, taken up at the /Vore, near the En- 
trance of the Thames. In thefe I obferved each of thofe 
{mall Holes fupplied with a Veficle, and a Polype in ‘it, in 
the manner they are reprefented at Fig. B, Plate XI. Thefe 
Polypes have 8 Zentaculi or Arms; and while the Branch 
was in the Watch-glafs of Sea-water, on the Stage of the Mi- 
-erofcope, I could plainly diftinguifh that the internal hol- 
— low Part of the whole Coralline was filled with the Subftance 
of the Parent Polype, which appeared to be of a tender gela- 
tinous Nature; and upon the leaft Extenfion or Contraction 
_of the young Polypes, this tender flefhy Subftance was vifi- 
bly affected ; for each one was united to it by their lower 
Part or Tail. 
21 
Fig. C, was drawn from a Piece of a Branch not yet un- 
Foldeee the Ends of this are round, and the Polypes ftill in- 
clofed in their Veficles, having not as yet arrived at Maturity. 
Thefe Embryo Polypes were fmaller and clofer as they ap- 
proached towards the Extremities of the young Branch, 
The Motion of the Inteftines of the young Polypes was very 
diftinguifhable till the Water became putrid ; and then both 
Veficles and Polypes dropped. off, like blighted Blofloms off 
' a Tree; and the Subftance of the Parent Polype, though 
feeming to fill the whole Cavity of the Branch before, as foon 
as the Water became improper for its Support, fhrivelled up _ 
N°. 18. Corallina procumbens caule corneo, longo, filiformi, ar- 
ticulato, veficulis, ramorum axillis, pedunculis contortis, sn- 
fidentibus. 
conan Seated Coraline: 5 aed: apt 
This Coralline has very tough, pliant, and thread-like, 
See abr grto ate a0 ; : Stalks 
Plate XII. 
