XVIII. should be carried out. Meanwhile the facts of the existence of the ruins, of their material, and of their present level are of great importance, as bearing on the recency of the last submergence, and the question arises whether the "salting mounds" are not of an- terior date to that submergence. If they were above high water at first (and the fires seem to prove this) and are now accessible by spring-tides, a sinking of five feet at least is implied. Reasons for supposing that a slow subsidence is in progress at the present time, have been given on a previous page. The pottery throws but little light on the subject, and that of a contradictory character. The greater number of the fragments consist of coarse pottery, mostly an inch thick, red externally, but black within. Some of the pieces are very full of impressions of grass (Enteromorpha) having evidently been held to- gether thereby during the baking. One piece belonged to a vessel at least two feet in diameter. All is of the coarsest hand manufacture, none of the pieces showing a trace of the wheel; in fact, all the pottery is ruder and rougher than the earliest known British urns. There is some black earthenware of very rough make, which was apparently nearly half grass before burning. There are many pieces of wedge-shaped tile or brick of finer material, apparently made in a mould, and well burnt, red throughout. They are about five- eighths of an inch square at the small end, and increase to two and a-half inches by one and one- eighth, but none perfect at the thick end have been found. A few are of yellowish mixed clay. In opposition to these we have the fragments of Roman turned ware, previously mentioned, but pos- sibly their occurrence was accidental. It is to be hoped that some day a more complete and thorough examination than the very imperfect traverses hitherto made may remove the mystery now shrouding the subject, and that these mounds may be able to throw some light upon the past of our race. They may have taken the place in a flat country entirely free from caves, of the natural shelters of rocky dis- tricts, and as Colchester may claim the honour, with the flat and despised Essex marshes, of being the cradle, though not the birthplace, of the race which has helped so largely to make England what she is, there may be some hidden and unsuspected revelation concerning that early time, which, when brought to light, may prove of the deepest interest to all the world-wide English-speaking family. The map on page xix. is a photographic reproduction of part of the Ordnance Survey, sheet 48 S.W., old series (scale one inch to the mile), to which have been added dots showing site of mounds. The electrotype is kindly lent by Mr. Stopes.