198 P. G. H. Bosivell — Differential Movement 



1896. "On a Phosphatic Chalk with Holaster planus at Lewes " : Quart. 



Journ. Geol. Soc, vol. lii, p. 563. 

 "On Submerged Land-surfaces at Barry, Glamorganshire": ibid., 

 vol. lii, p. 474. 



1897. " On the Glacial Phenomena of Palseozoic age in the Varanger Fiord " : 



Quart. Journ. Geol. Soc, vol. liii, p. 137. 

 ' ' The Eaised Beaches and Glacial Deposits of the Varanger Fiord ' ' : 

 ibid., p. 147. 



1898. ' ' On the Bevision of South Wales and Monmouthshire by the Geological 



Survey " : Geol. Mag., 1898, p. 488. 



1899. " On the Age of the Vale of Clwyd " : Geol. Mag., 1899, p. 111. 



" On an Abnormal Section of Chloritic Marl at Mupe Bay, Dorset": 

 ibid., p. 319. 



1901. " On the Passage of a Seam of Coal into a Seam of Dolomite " : Quart. 



Journ. Geol. Soc, vol. lvii, p. 297. 

 " On the Origin of Coal " : Geol. Mag., 1901, p. 29. 



1902. " On the Origin of the Biver System of South Wales and its connection 



with that of the Severn and the Thames " : ibid., vol.lviii, p. 207. 



1904. Presidential Address to Section C of the British Association : Bep. 



Brit. Assoc, for 1904. 



1905. Beport on the Coal-fields of Lancashire, Cheshire, and North Wales, 



and on Concealed and Unproved Coal-fields, for the Boyal 

 Commission on Coal Supplies. 



1906. " Investigation of Bivers " (with others) : Geog. Journ., 1st Bep., 1908 ; 



2nd Bep., 1909 ; 3rd Bep., 1910 ; 4th Bep., 1911 ; Final Beport in 



the press. 

 1908. Appendix to paper on the Pendulum Observations in India by Major 



G. P. L. Conyngham : Survey of India, Professional Papers, No. 10. 

 1910. " Glacial Phenomena of South Wales " : Bep. Brit. Assoc, for 1909, 



p. 475. 

 " The Geology of South Wales " : Geol. Assoc, Jubilee vol., p. 826. 



1913. Presidential Address [" On the Palasozoic Platform "] to the Geological 



Society of London : Quart. Journ. Geol. Soc, vol. lxix, p. 70. 



1914. Presidential Address [" On Problems of Post-Glacial Denudation "] to 



the Geological Society of London : Quart. Journ. Geol. Soc, 



vol. lxx, p. 59. 

 " The Subdivisions and Correlation of the Pre-Cambrian Bocks of the 



British Isles " : Internat. Geol. Congress, Twelfth Session (1913), 



Canada, Compte-rendu (1914), p. 339. 

 " On the Coal Besources of Great Britain " : Internat. Geol. Congress, 



Twelfth Session (1913), Canada; "The Coal Besources of the 



World," p. 597. 



II. — Differential Movement in East Anglia in Tertiary 



Times. 



By P. G. H. Boswell, B.Sc, D.I.C., F.G.S., Imperial College of Science and 

 Technology, South Kensington. 



THE sudden change of strike of the Chalk in South-East Suffolk, 

 exceeded only in abruptness at the western limit of the London 

 Basin, is accompanied by Tertiary phenomena equally interesting, 

 and the occurrence of the Palaeozoic platform at a small depth under 

 the Chalk in the deep borings at Culford, Stutton, Harwich, and 

 Weeley is, in this connexion, very significant. 



Silurian or older rocks are separated from the Chalk at Culford, 

 Stutton, and Weeley by a small thickness of Gault and Greensand 

 only, while the rock met with in the Harwich boring, below 61 feet of 

 the same beds, is believed by Professor W. W. Watts to have its closest 



