Natural Hiftory | 
and calcarious Matter. At the dark Part near D, the cal- _ 
carious Tubes are taken off, on purpofe to fhew that the 
horny Parts underneath, which {till have the Appearance of 
Tubes, have taken the fame Courfe and Direétion with the 
calcarious ones, that fucceeded and covered them. After 
this they made a fhort Turn, to gain the broken End of the 
upper Part of the Stem of this Branch; and from thence 
they continued their Progrefs along it towards the finer Ra- 
mifications, as ufual. 7 ae rf 
Fig. Z, reprefents two calcarious Tubes magnified: Thefe 
were cut off from the cortical Part of the Trunk, near Fig. Z. 
The component Parts of the calcarious Matter are fo mag- 
nified, that the particular Shape of them may be diftinguifh- 
ed, which is not unlike that of the red Coral. 
Fig. F and J, reprefent a {mall Sprig magnified, that was 
taken from the Top of this Keratophyton, at Fig. O. 
Fig. G, is a {mall Ramification of this Sprig, with the _ 
calcarious Surface thinly taken off, to difcover the three 
Tubes, that run juft under the Surface ; the two Side ones ap- 
pear to have {mall Holes in them, as if the Animals commu- 
- nicated with the 2 Rows of Cells on the Sides. By cutting 
another very thin Slice, we difcover both the horny ‘Tube in 
the Middle, and the two Rows of Cells; which are both ex- 
prefied on the oppofite Ramification, at Fig, i= A 
In each of thefe Cells we plainly difcover a {mall Polype, 
of the Size of the Figures at /V, and. of the fame Shape with 
the magnified Figures at /Z. This Specimen was lately 
brought from the We/-Indies; the Animals were very diftin- 
guifhable, but contraéted: The dark Holes on the Sides of 
the Stem, and lower Branch of this magnified Sprig, J and 
