Aboriginal Chambers near Tilbury

*Aboriginal Chambers near Tilbury* (Vol. i., p. 462.).—Mr. Cook, of Abeley, Essex, having seen this Query, which had been kindly quoted into *The Athenæum* of the 25th ultimo, communicated to that journal on Saturday, June 1st, the following information respecting two of these caves, the result of a personal examination of them:— "The shafts are five in number; and are situated at the edge of Hanging Wood, in the parish of Chadwell, about three miles from Grays Pier. I descended two of them in 1847, by means of a rope and pulley fixed to the branch of a neighbouring tree,—taking the precaution…