io Mr. ellis on the Gorgonia. 
with nourilhment. Dr. bohadsch has very judicioufly 
brought to this genus the great Greenland cluttered polype 
formerly defcribed by me under that name, and now 
called pennatula arclica. In a crofs fettion of the 
bone, fee Philofophical Tranfacftions, vol. XLVI1I. 
tab. xii. f. H. the feveral lamina are magnified, to 
ttiew that* they are formed in layers like fhells, and are 
not full of tubes as in a vegetable growth Thefe ani- 
mals are ranged among the vegetating kind, and fo called 
by Dr. pallas. There is a great affinity between the 
gorgonia and ijis> fo that the increafe of the bone of the 
latter will greatly illuttrate that of the former. The lon- 
gitudinal left ion of the bone to the ftem of the ifis hip - 
pur is will fhew, that it hath been increafed in diameter by 
fucceffive layers of ftony matter that furround it, fee 
fig. 7. In this inftance we can trace the bone in its in- 
fant ftate, when nature had given it pliable black horny 
joints, that it might yield the better to the violence of 
the waves ; but as foon as it became ftronger, thefe horny 
black joints were no longer neceffiiry, as we find the lower 
part of the ftems totally overgrown with the bony fub- 
ttance. The furrows in this coral are deeper than thole 
of any other; infomuch that not only the longi- 
tudinal flefhy tubes that furround the bone, but even 
the minute pores in them, through which the qjjeous juice 
exudes, are very difcernible fee fig. 3. 
We now come to a very lingular circumttance in the 
growth of the gorgonia , in which it dilfcrs remarkably 
from that of trees. In fig. 8 . is the figure of the naked 
ftem 
