"Arisaig light-house, here one sees considerable of a Phyllite exhibiting plainly flow structure that craters and. Associated is material that looks like brick-red shales but which Williams thinks is the same phyllite metamorphosed and squeezed until it breaks up in the crater into a shale. To the south occurs a thin zone of rather laid breccia. At the light house outside of the phyllite or to the north occurs a dark basalt. Between them occurs considerable thickness of tuff usually of a brick red color in parts of which are embedded fragments of a distinctly crystalline igneous rock. To me are these igneous rocks one of extrusive origin previous to the Siluric. They were formed out over the Cambro-Siluric land. Upon the hemmrod surface of these rocks was deposited the Siluric Sedimentaries beginning with the "Medina". We saw these in full force at Beechy Hill Cove followed by the fissile dark, almost black, loose slates of the Arisaig Formation. It was here that Trenchard collected his Medina fossils. The ones I got nine years ago was at Arisaig Point. The fossils came from very hard fine grained calcareous sandstone while Trenchard's were rather fine chalky ajillaceous limestones. Does this mean that the "Medina" at Arisaig Bay may have been tailed by the igneous masses? This once I believe that the fossils at Darlington are from the hard quartzite banks. Therefore not necessarily any taking.