A. Tylor on the Amiens Gravel. 
Fig. 7.—Section across the Saveuse valley. 
380 yards broad. 28 yards deep. 
It is obvious that any theory of excavation of the Somme 
valley, at Amiens, must take into account the condition of the 
dry Saveuse valley, which is only a type of hundreds of other 
dry valleys, which formerly were filled with water falling into 
the Somme and swelling it into a river capable of overflowing 
St.-Acheul. 
the Somme valley which I hold. I shall now only remark . 
the bottom of the valley of Saveuse opens into the valley F 
the Cette, between Montiers and Renancourt, at a height 0 
oh above the sea nea! 
t=) 
he chalk- 
valley on which they repose from one end to the other, but mF 
the physical circumstances which oc¢ 
Period of deposition. The loess is in some places seri 
in others is a fine loam , but it varies little in coarsene® 
oy 
