404 WARREN UPHAM, ESQ., M.A., F.G.S.A., ON 
hitherto received less attention than they deserve, probably 
because they differ from the earlier published views of 
Prestwich, Lyell, Lubbock, Evans, and others, who ascribe 
the excavation of the lower part of the Somme valley to 
river action during the Paleolithic period, while the later 
eravel beds were being deposited, or in the intervals of such 
deposition and afterward.* The Tertiary erosion extended 
* Without attempting reference to all of the multitude of papers and 
books relating to the evidences of primitive man in the Somme valley, 
citation of some which are more TBPES or comprehensive may be 
noted as follows :— 
Boucher de Perthes, Antiguités Celtiques et Antédiluviennes, vol. i, 
p. 628, with 80 plates (1,600 figures), 1847; vol. ii, p. 511, with 
26 plates (500 figures), 1857 ; vol. il, p. 681, with 12 plates 
(104 figures), 1864. 
Sir Joseph Prestwich, Proc. Loy. Soc., 1859; Phil. Trans., 1860, 
1864 ; many later papers, especially in Quart. Jour. Geol. Soe. ¢ 
and his Geology, vol. 1i, 1888. 
Sir Charles Lyell, Brit. Assoc. Report, 1859, Part 2, pp. 93-95 ; The 
Geological Evidences of the Antiquity of Man, 1863, chapters 
vii and viii. 
Sir John Lubbock, numerous papers, 1861-1864 ; Prehistoric Times, 
1865, 1869, chapter xi. 
Sir John Evans, Archeologia, 1862, p. 28, with four plates ; numerous 
other papers, and Ancient Stone Implements, Weapons, and 
Ornaments of Great Britain, 1872 (exceedingly useful in its 
fulness of bibliographic references). 
Professor W. Boyd “Dawkins, numerous papers, 1862 and onward ; 
Cave Hunting, Researches on the Evidence of Caves respecting the 
Early Inhabitants of Europe, 1874. 
Alfred Tylor, Quart. Jour. Geol. Soc., vol. xxii, 1866, pp. 463-468 ; 
vol. xxiv, 1868, pp. 103-125, with two plates (map of Amiens 
and vicinity and 13 sectior 8), and 13 figures (sections, profiles, 
and a map), in the text; and vol. xxv, 1869, pp- 57-100, with 
six plates (abstract and discussion of this paper in vol. xxiv, 
pp. 455, 456). 
Dr. Edmund Andrews, Am. Jour. Sci., second series, vol. xlv, 
pp. 180-190, March, 1868. 
Professor James Geikie, The Great Ice Age and its relation to the 
Antiquity of Man, 1874, 1877, 1894; Prehistoric Europe, 1881. 
Professor Gabriel de Mortillet, Matériaue pour 0 Histoire Primitive et 
Naturelle de 0 Homme, 1865 and onwar d ; Le Prehistorique, 1883. 
Emile Cartailhac, Matériau, 1865 and onward ; La France Pré- 
historique, 1889. 
J. Ladriére, Annales de la Société Géologique du Nord, vols. xviti-xx 
(summarized in Geikie’s Great Ice Age, third ed., 1894, pp. 
629-637). 
Albert Falsan, La Période Glaciaire étudiée principalement en France 
et en Suisse, 1889. 
