The oldest remains of the Stone Age have been found in the gravels. A French scholar found between 1841 and 1853, in the valley of the Somme, certain sharp instruments made of flint. They were buried to a depth of six metres in gravel under three layers of clay, gravel, and marl which had never been broken up. In the same place they discovered bones of cattle, deer, and elephants. For a long time people made light of this discovery. They said that the chipping of the flints was due to chance. At last, in 1860, several scholars came to study the remains in the.
