At the date of publication of my “British Fossil Mammals” (1846) I had not obtained satisfactory evidence of the Elk as one of them. But shortly after that period the Tyne-side Naturalists recorded in their instructive ‘Transactions’ the discovery of a fine antler of an Elk (‘Alces palmatus fossilis’ of the ‘Club’) in a Peatbog, near the North Tyne Eiver, Northumberland. I am now able to add to that notice evidence of the extension of the localities of true Elk-remains as far south as Walthamstow, Essex. The excavations of the East London Waterworks, now in progress, have exposed sections of an old bed of the Eiver Lea, near Walthamstow. In this bed, at from five to eight feet in depth, have been obtained remains of Bos longifrons, Capra hircus, with remarkably fine horncores, part of an antler, two feet eight inches long, of a Reindeer (C. tarandus), and in another kind of deposit, as evidenced by the darker colour of the bones, and a thin partial coating of limy matter, were obtained the humerus, antibrachium, and metacarpus of an Elk, closely corresponding with those of the existing Scandinavian species (Cervus Alces, Linn.; Alces palmatus; Auct., and Alces Europæus, Hamilton Smith).