Coral-Hunting in the debris of a Wenlock-shale quarry ranks high— to my thinking—amongst the pleasures of geology. And, indeed, has no insignificant place among its wonders. For to any one not conversant with zoophytic life, it is hard to believe that the rugged corals that lie strewn about the quarry, once held sensitive masses of life—that from every pore tiny arms waved to and fro in the water to entangle the lesser creatures they lived on; and that the animal— that slight thread of jelly-like substance, filling each tube, was at once a limb of the body and an independent creature, contributing, while attached, to the general support, and being able, if severed from the mass, to lead a separate existence and be itself the parent of others. The Wenlock series of the Upper Silurians have been rightly regarded as the metropolis of its zoophytic life, for both in variety and number, corals culminated in the seas of that age. Of these species, “so far removed from existing ones as to be quite unknown in modern seas, all with rare exceptions, dying out at the close of the Palæozoic epoch.” I will essay a familiar sketch.