76 NOTES—ORIGINAL AND SELECTED plan of these old workings for chalk. He said that since he made the remarks on these caves at the meeting on April 16th (E.N., vol. xiii., pp. 263-4), he had received the plan shown. An old friend of his, Mr. R. O. Heslop, F.S.A., of Newcastle-on-Tyne, wrote to him asking if he knew anything about these caves, and adding that Mr. T. E. Forster, a well- known mining engineer of that city, was much interested in them. CHISLEHURST CAVES Plan of a small group of the more remote galleries, but thoroughly typical of the general system of excavation. Scale 33 feet to one inch. From T. E. Forster's Plan. He (Mr. Holmes) sent to Mr. Heslop an account of these caves resembling that given in the Essex Naturalist, which Mr. Heslop forwarded to Mr. Forster. On May 13th, Mr. Forster wrote expressing agreement as regards the modes of construction and the objects of the makers of these Chislehurst Caves, and very kindly forwarding the plan exhibited, which is dated January, 1904. Being the work of a man specially qualified to make an accurate plan of such workings, its testimony is decisive. It clearly shows that whatever may be the apparent