178 WITH REMARKS UPON THE OBJECTS FOUND. known mounds in the Wigborough and Mersea districts, prepared by Mr. W. H. Dalton, F.G.S. The sites are plotted on the 1-inch map, and are consequently only approximations to the true positions. In the remarks that follow, I make no pretension to putting forth a complete and permanent theory of the origin and use of the Red-hills. I simply wish to make a few suggestions, which may be taken as "working hypotheses" in guiding the investi- gations of future explorers. In any discussion of the subject the following data should be kept in mind:— I. The distribution of the Red-hills on the saltings and marshes, above high-water mark, and generally fairly close to existing salt creeks and estuaries. None are found inland. II. The great number of "hills" at present known. It is probable that Mr. Dalton, Dr. Laver, and myself could plot down 200 on the Essex map. III. The large size of many of them. They vary in extent from half-an-acre to about 25 acres, and as the burnt earth is often several feet thick, the total quantity must be prodigious. One near Peldon, covering 10 acres, Mr. Stopes estimated to contain some 100,000 tons of red-earth. IV. The apparent homogeneity of the burnt earth, and the close corres- pondence of structure and contents of one "hill" with another. V. The numerical proportions of the fragments of pottery. The vast number of shards were of the coarse, thick pottery, often so plentiful as to form quite one-fourth of the whole mass of burnt stuff. The paucity of the wedges and T-shaped pieces, and the comparatively small number of fragments of the finer ware. Whilst working at the hills, the conclusion irresistibly forced itself upon us that we had there the debris of some primitive kind of pottery-making industry, and I put forward that hypothesis when relating the results of the Burnham exploration at the meeting of the Club at Colchester in March, 1889 (Essex Nat., iii., 163-4), and again at the meeting at Virley on April 13th, 1903 (Essex Nat., Vol. xiii., pp. 244-5). On consultation with an old potter employed at the Potteries in Honey Lane, Waltham Abbey, he pointed out the similarity of the fragments of coarse pottery to the ware of the great seggars used to protect pots during firing. He also recognised the T-pieces as suggesting the rudely moulded rods or ''spacers" of clay used to keep the pots expanded whilst being baked. The little "bricks" are like the wedges still used in potteries to keep the vessels upright