Note 47 — Chapter III · HISTORIC CAVES IN BRITAIN.
Reading edition
Roach Smith, “Collectanea Antiqua,” vol. i. No. 5, p. 72, 1844. It is noticed by Eckroyd Smith, Trans. Historic Society of Lancashire and Cheshire, May 11, 1865; and by Mr. Denny, Trans. Geol. and Polytechnic Soc. of West Riding, 1859.