The Ancient Fauna of Essex. 3 there. This tract was not disafforested until 1777 (17 Geo. III. c. 17). Chapman and Andre's Map of Essex (1777) is the earliest accurate map of this county, and shows at least a portion of the tract under consideration still covered with forest-trees, and styled "Walthamstow Forest." Indeed so late as the first Ordnance Survey Map (published in 1805) the "Lower Forest" extended close to Maryland Point, Stratford. Turning from the written evidence of the Epping Forest district, it is of no small interest to ascertain what can be learnt from the unwritten records of prehistoric times which have been preserved to us in the ancient and modern river- valley deposits, the brick-earths, shell-marls, and peat, so characteristic of large portions of this area. Bearing in mind the former continuity and extent of Epping and Walthamstow Forests, and the very recent date at which a large part of this area has been enclosed and cultivated, we can the more readily understand how it has happened that such interesting prehistoric remains as are here met with, only a few feet below the surface, have remained hidden for so many centuries, undisturbed by that most restless of all beings— Man,—to be unearthed at this time, when their interest can be appreciated and their significance understood. The best illustration of the remains of the more recent fauna of the river-valleys of the Lea and the Boding was that exposed in the district of Walthamstow, which, in 1868-69, was laid bare by the East London Water-works Company in preparing their large filter-beds and reservoirs, which extended from the Lea Bridge Road in a northerly direction beyond Tottenham Railway Station, and occupied at that time the area marked on the maps as Walthamstow Forest. Their works in 1869 covered more than one hundred acres, the depth of the general floor nowhere exceeding ten feet; but the trenches made for the "puddled walls" in the centre of the artificial embankments went down to a depth of twenty to twenty-four feet. The subjoined sections, taken by me in the summer of 1869, will serve to show the nature of these deposits:—