440 SHEPPARD : YORKSHIRE GEOLOGY, 1921. 
Russell, E. J. — The Improvement of Peaty Soils. Part I. — The 
True Peats. Journ. Minis. Agric, March, pp. 1104-1113. 
Sheppard, T. — The Evolution of Topographical and Geological Maps 
[Presidential Address to Conference of Delegates, British Associa- 
tion]. Rejj. Brit. Assoc. for 1920, pp. 391-404. 
List of Papers bearing upon the Zoology, Botany and Prehistoric 
Archseology of the British Isles, issued during June-December, 
1919. Rejj. Brit. Assoc. for 1920, pp. 406-435. 
The Origin of the Materials used in the Manufacture of Prehistoric 
Stone Weapons in East Yorkshire. Hull Museum Publications, 
No. 122, pp. 34-54. 
Spurn Point and the Lost Towns of the Humber. Trans. Inst. 
Water Eng. Also Water, July 20th, pp. 257-258 ; and pp. 265- 
266 ; Nature, October, 20th, pp. 253-254. 
Remains of Elej^has in East Yorkshire. The Naturalist, February 
p. 76. 
Pseudodiadema variolare (Brongniart) in the Lower Chalk of 
North Lincolnshire. The Naturalist, May, p. 181. 
Bibliography : Papers and Records relating to the Geology of 
the North of England (Yorkshire excepted), published during 
1920. The Naturalist, June, pp. 217-220 ; July, pp. 249-253. 
[Old Paving Stones from Iceland ? A question for Hull Geolo- 
gists]. The Naturalist, December, p. 419. 
Cristallographie et Mineralogie Petrographie et Lithologie. 
Geologic Generale, Tectonique, Geographic physique [abstracts 
of papers in The Naturalist, 1915-1919]. Revue de Geologic, 
January, pp. 15-34. 
Mammiferes et Reptiles [abstracts]. Rev. de Geologic, July, pp. 
334-335. 
Paleoconchologie [notice of papers on]. Rev. du Geol. Aout, 
pp. 410-411. 
Coelenteres [notice of papers on] torn, cit., pp. 418-419. 
Paleophytologie [notice of papers on], toni. cit., pp. 427-428. 
Geologic Generale [abstracts of papers on]. Revue de Geol., 
December, pp. 470-471 ; Hydrologie, toni. cit., p. 473 ; Geologie 
Glaciaire, torn, cit, pp. 473-474 ; Divers, torn, cit., pp. 492-493 ; 
Stratigraphie, torn. cit. February, pp. 76-77 ; Geologie regionale, 
torn, cit., Dec, pp. 479-480 ; Feb. pp. 85-86. 
