the last layer of plasters, until he had reached the top, in which a small aperture was left, and the clay nipped round the edge; another coating would then be laid on as before described. Directly after, gravel or loam was thrown up against the side wall where the clay wrappers were commenced--probably to secure the bricks and the clay coating. The kiln was then fired with wood.[9] In consequence of the care taken to place grass between the edges of the wrappers, they could be unpacked in the same size pieces as when laid on in a plastic state; and thus the danger in breaking the coat to obtain the contents of the kiln could be obviated. In the course of my excavations I discovered a curiously constructed furnace, of which I have never before or since met an example. Over it had been placed two circular vessels; the next above the furnace was a third less than the other, which would hold about eight gallons; the fire passed partly under both of them, the smoke escaping by a smoothly-plastered flue, from seven to eight inches wide. The vessels were suspended by the rims fitting into a circular groove or rabbet, formed for the purpose. They contained pottery, both perfect and fragmentary. It is probable they had covers, and I am inclined to think were used for glazing peculiar kinds of the immense quantities of ornamented ware made in this district. Its contiguity to one of the workshops in which the glaze (oxide of iron) and other pigments were found confirms this opinion.” [Illustration: Fig. 102.--Potter’s Kiln, Castor.]