Frof. Bonneij 8f Rev. E. Hill— Chalk Bluffs. 397 



1897. "Wmiani Smith's Manuscript Maps": Geol. Mag., Dec. IV, Vol. IV, 



pp. 439-447. 



1898. "The Earliest Engraved Geological Maps of England and "Wales " : ibid., 



Dec. IV, Vol. V, pp. 97-103. 

 1898. " The Earliest Geological Maps of Scotland and Ireland " : ibid., 



Dec. IV, Vol. V, pp. 145-149. 

 1898. Obituary Notice of John Carrick Moore : Proc. Roy. Soc, vol. Lxiii, 



pp. xxix-xxxii. 



1898. "On the Petrology of Rockall " : Trans. Roy. Irish Acad., vol. xxxi, 



pt. 3, pp. 48-57. 



1899. "Notes on Rockall Island and Bank" : Geol. Mag., Dec. IV, Vol. VI, 



pp. 163-167. 

 1899. (With W. E. Hidden) " On a new Mode of Occurrence of Ruby in North 



Carolina " : Min. Mag., vol. xii, pp. 139-149 (also in Amer. Jom-n. Sci., 



ser. IV, vol. xiii, pp. 370-379). 

 1901. " Volcanoes and Volcanic Action " : Antarctic Manual, pp. 188-192. 



1901. "Note on the Structure of Sarsens " : Geol. Mag., Dec. IV, Vol. VIII, 



pp. 1-2. 



1902. "Note on the Nature and Origin of the Rock Fragments found in the 



Excavations made at Stonehenge by W. Gowland, Esq. " : ArchcBologia, 

 vol. Iviii, pp. 106-118 (also in Wilts Arch. & Nat. Hist. Mag., vol. xxxiii, 

 pp. 47-61, and, 1903, Geol. Mag., Dec. IV, Vol. X, p. 129). 



1904. " The Atoll of Funafuti : Borings into a Coral Reef and the Results," being 

 the Report of the Coral Reef Committee of the Royal Society : Extra 

 vols, of Phil. Trans. Sect, x, "General Report on the Materials sent 

 from Funafuti, and the Methods of dealing with them," pp. 167-185 ; 

 Sect, xii, "The Chemical Examination of the Materials from Funafuti," 

 pp. 362-389. 



1904. Obituary Notice of Sir Clement Le Neve Foster : Proc. Roy. Soc, vol. Ixsv,. 

 pt. 4, pp. 371-377 (also in Min. Mag., vol. xiv, pp. 57-59). 



1904. Obituary Notice of Frank Rutley : Min. Mag., vol. xiv, pp. 59-61. 



II. — The Chalk Bluffs at Trimingham. 



By Professor T. G. Bonney, D.Sc, F.R.S., and Rev. E. Hill, M.A., F.G.S.' 



(PLATE XXII.) 



THE huge masses of chalk in the glacial drift on both sides of 

 Cromer, and especially at the headland near Trimingham, 

 have for many years attracted the attention of geologists. In this 

 Magazine (Dec. II, Vol. VII, 1880, p. 55) and in the Survey 

 Memoir on the Geology of the Country around Cromer, published 

 in 1882, Mr. Clement Reid ascribes those at the latter place to the 

 advance of an ice-sheet by which the chalk has been thrust up into 

 a kind of fold and the flint layers have been bent, illustrating his 

 interpretation by a diagrammatic section. We visited the Cromer 

 cliffs for the first time in 1892, and after a careful examination of 

 the Trimingham headland, not only felt more strongly than before 

 certain weak points in Mr. Eeid's reasoning, but also observed 

 some facts difHcult to reconcile with his conclusions. Since that 

 date we have more than once visited these sections, and found 

 last April that comparatively recent inroads of the sea had made 

 great changes which had shown the relations of the chalk and 

 glacial drift to be, in our opinion, incompatible with Mr. Reid's 

 interpretation. 



In 1892 two separate masses or ' bluffs ' of chalk, as he describes 

 in the Memoir (p. 95), were exposed in the drift at the base 



