Some objections to the recognition of the so-called ‘eoliths’ as artefacts may now be considered.
Fig. 24. Chart of the relative duration of Miocene, Pliocene and Pleistocene time: (From Penck.)
1. Line of oscillation of level of lowest snow-line. (Central Europe.)
2. Localities where ‘eolithic implements’ occur.
3. Names of representatives of ancestral forms of the modern Horse. The claim of Anchitherium to occupy the position it holds here, is strongly criticised by Depèret.
4. Names of representatives of ancestral forms of modern Elephants.
The chart is to be read from right to left. The gradual sinking of the snow-line is to be noticed, and the oscillations of the same line during the Glacial Period are also shewn (cf. [Fig. 25]).
![[Fig. 25]](#img_25.jpg){kind=link}