On the Discovery of some Remains of Plants at the Base of the Denbighshire Grits, near Corwen, North Wales

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Abstract
I n A ugust 1875, when searching for fossils in the Pen-y-Glog slate-quarry, which is situated about two miles to the east of Corwen, I noticed some carbonaceous-looking fragments and markings on the shales in association with the massive grit beds towards the top of the quarry, which I thought at the time might possibly be plant-remains. Last summer I had another favourable opportunity of examining these beds; and I was fortunate enough to discover undoubted plant-remains scattered very abundantly over their surfaces. I submitted these for further examination to Mr. Carruthers, of the British Museum, and had the satisfaction to find that he entirely confirmed my views as to their nature. He said they were undoubtedly “angular fragments of plants,” but that the specimens were not in a sufficiently satisfactory condition to determine the actual plants to which they belonged. I decided, therefore, not to bring the matter before the Society until I had another opportunity of visiting the quarry and of endeavouring to procure more perfect specimens. This I was able to do lately; and the additional materials now found have proved to exhibit structures sufficiently well marked to enable a very clear identification of several distinct plants to be made out. The specimens have been generally examined by Mr. Carruthers, and some specially by Mr. Etheridge and Mr. Newton, of the Jermyn- Street Museum.Amongst them have been found numerous small spherical bodies identical in general appearance, and in internal structure, with the Pachytheca described by Sir J. D. Hooker,

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