Note 101b — Chapter VII · GEOLOGICAL NOTES.
Reading edition
Mr. H. Preston, F.G.S., of Grantham, goes into the matter rather fully in the “Naturalist” of 1898, pp. 247–255; as also Mr. F. M. Burton, F.L.S., F.G.S., of Gainsborough had previously done, in the “Naturalist” of 1895, pp. 273–280.