[4] It is due to the memory of that very able pioneer of discoveries in our Wiltshire barrows—the late Mr. W. Cunnington, F.S.A., of Heytesbury, who is here referred to—to explain that though he found some fragments of Roman pottery among the loose earth which had slipped into the cavity caused by the fall of the great Trilithon in 1797, he did not consider that this pottery had been deposited before the erection of the stones, but that it must have found its way into the ground afterwards, from some cause or other. That this was Mr. Cunnington’s belief is quite certain from a letter of his on the subject, dated Oct. 2, 1801, and which is, I believe in the possession of his grandson, Mr. W. Cunnington, F.G.S.