Page:Transactions of the Geological Society, 1st series, vol. 2.djvu/395

Rh any specimens. In the blue marl on which the sandstone rests, I found only two or three fragments of cylinders with the cortical part easily detaching itself, the substance being of the same nature as the stratum containing them. The green sand and the limestone were the chief repositories. I traced them upwards into the chert; but they there became rare, and they totally disappeared in the chalk marl. But in the fragments of flint with which the shore from Dunnose to Ventnor is covered, I found many of the cylinders enclosed, and sometimes exhibiting both the internal and cortical part. Frequently I observed white circles in the flint, somewhat resembling those above-mentioned in the green sandstone, having in the internal part flint of the same kind as the envelope; and it is not improbable that these are sections of the cylindrical forms I have been describing.

Since my return to London, the drawings and specimens above described have been seen by several gentlemen skilled in organic remains, and particularly by Mr. Parkinson. It was his opinion that they all belonged to the genus Alcyonium, but were of three if not four different species, not one of which had hitherto been described. The circumstances which he pointed out in which the first-mentioned differed from any known fossil Alcyonia are the following.

The heads vary in form from any other, being longer or more tulip-shaped.

Rh