40 CxEOLOGY. 



Topley, "William. The Geology of the Weald (parts of the Counties 

 of Kent, Surrey, Sussex, and Hants). (In part from the Notes of 

 H. W. Bristow, W. T. Aveline, F. Drew, C. Gould, and Dr. C. Le 

 N. Foster.) Lists of Possils, revised by R. Etheridge. Pp. xiv, 

 503. 7 plates (maps and sections), 59 woodcuts. Geological 

 Survey Memoir. 8vo. London. 

 Pay^t I. Introductory, chaps, i., ii. General sketch of the district, 

 pp. 1-7. Geological literature relating to the district, 8-29. — Part II. 

 Stratigraphical Geology , oh^)^. iii.-xiii. Purbeck Beds, 30-44. Hastings 

 Beds (Fairlight Clays, Ashdown Sand, Wadhurst Clay, Tunbridge 

 "Wells Sand, and Grinstead Clay), grouped in the following districts : — 

 1. Hastings and Battle, 2. Cranbrook and Tunbridge Wells, 3. East 

 Grinstead, 4. Cuckneld, 45-95. Weald Clay, 96-111. L. Greensand 

 (Atherfield Clav, Hythe Beds, Sandgate Beds, Folkestone Beds), 112- 

 144. Gault, 145-151. U. Greensand, 152-159. Grayels (Eivers 

 Bother, Stour, Medway, Harent, Mole, Wey, Arun, Adur, Ouse, 

 Cuckmere, Ashburn), 160-204. Eecent Deposits (Alluvium, Blown 

 Sand, Shingle), 205-215. — Part III. PJiysical Geology^ chaps, xiv.- 

 xviii. Structure of the country (a description of the lines of disturb- 

 ance, faults, &c.), 216-242. Scenery and Agricultural Characters, 243- 

 269. Denudation of the Weald, 270-301. Eecent Geological Changes 

 (Coast-line), 302-320. Origin of the Wealden Beds, 321-328.— 

 Pari IV. Economic Geology, chaps, xix.-xxv. Ironworks, Coal, Springs 

 and Water Supply, Building Stones, Road Material, Limestones, Ma- 

 ' nures, «S:c., Distribution of Population and Disease, pp. 329-405. — Ap- 

 jpendices. Lists of Fossils, 406-436. List of Specimens in the Museum 

 of Practical Geology, 438-445. Bibliography, 446-483. W. W. 



Geological Report (Sub-Wealden Exploration Report). Rep. 



Brit. Assoc, for 1874, pp. 22-27. 

 Gives some details of the beds in the first boring, and suggests the 

 horizons to which they may be referred. Lists of fossils are given. 



. Sub-Wealden Exploration. Nature, yol. xi. pp.284, 285. 



Refers to Mr. Blake's letter (see p. 6), and gives reasons why the 

 second boring was commenced on the same site as the first. 



— — • The Channel Tunnel. — Submarine Explorations. Nature, 



vol. xiii. pp. 133, 134. 

 Notes recent researches, especially the French Report (see p. 46). 



Traill, W. A. On a Mass of Travertine or Calcareous Tufa, called 

 The Glen Rock, near Ballycastle, Co. Mayo, Ireland. {Brit. 

 Assoc.) Geol. Mag. dec. 2, vol. ii. pp. 608-610. 

 This rock, 6 to 80 feet thick, and containing over 2,100,000 cubic 

 feet, has been formed by a spring which, issuing from the Carboniferous 

 Limestone, has run over mosses, &c. The stream is now confined to a 

 more regular channel, and the formation of tufa is less rapid. Pro- 

 bably the tufa has not increased in thickness for 300 years ; and in 

 parts it is breaking up. W. T. 



