380 SCIENCE PROGRESS 



The views of the leading French geologists, and particu- 

 larly of Prof. Marcellin Boule, 1 differ from those of Prof. Penck 

 in much the same manner as those of Prof. Penck differ from 

 those of Prof. Hoernes ; as will be seen from the following 



of time.. 



Chel lean 



n 



Fig. i. — Curve of climate for the Glacial Epoch. 



table the series of human industries is advanced by Prof. 

 Boule one stage nearer the present : — 



Post-glacial { Magdalenian 



I Solutrean 

 Glacial IV. Mousterian 

 Genial III. Chellean 



The Chellean with its accompanying warm fauna is placed in 

 the last interglacial episode, and by this proceeding the facts 

 are brought into greater harmony with those which have been 

 discovered in this country by British observers. 



In support of his correlation Prof. Boule insists in the 

 first place that implements of the lower Palaeolithic period 

 are not, as is asserted, rigidly excluded from the region once 

 occupied by the ice of the third glacial episode. In 1887 

 M. Tardy found an Acheulean boucher on the right bank of 

 the Ain, above alluvium which overlay undisturbed moraines 

 of the great Rhone glacier; and in 1908 M. Lebrun found a 

 little boucher (3 inches long), also of Acheulean type, near 

 Conliege, 5 kilometres south-east of Lons-le-Saunier, i.e. in a 

 region occupied by the ice during its greatest extension (glacial 

 episode III). Thus it follows that the Acheulean industry is 

 more recent than the third glacial episode. Prof. Penck objects 

 to this argument that the occurrence of isolated implements 

 within the glaciated area is of less importance than the com- 



3 M. Boule, " Paleontologie stratigraphique de l'Homme," Rev. d'Anthrop., 

 1888, 1889 ser. 3 to 4, and " Observations sur un silex taille du Jura et sur la 

 Chronologie de M. Penck," U Anthropologic, 1908, t. 19, pp. 1-13 (separate copy). 



