(37) Bonarelli, 1909.1.
(38) Penck, 1909.1.
(39) Geikie, J., 1914.1, p. 258.
(40) Op. cit., pp. 257-262.
(41) Schmidt, 1912.1, p. 181.
CHAPTER II
ARRIVAL OF THE PRE-CHELLEAN FLINT WORKERS DURING THE THIRD INTERGLACIAL—GEOGRAPHY, CLIMATE, AND THE RIVER DRIFTS—PRE-CHELLEAN FLINT INDUSTRY—THE PILTDOWN RACE—MAMMALIAN LIFE—CHELLEAN AND ACHEULEAN INDUSTRIES—THE USE OF FIRE—THE SECOND PERIOD OF ARID CLIMATE—THE NEANDERTHAL RACE OF KRAPINA, CROATIA
The geologic epoch of the arrival of the Pre-Chellean flint workers in western Europe is by far the most important and interesting one before the prehistorian. Upon it depends the question of the duration of the Old Stone Age, the date of appearance of the Piltdown and of the Neanderthal races, and the whole sequence of climatic and geographic changes surrounding the early history of man. After weighing all the evidence very carefully, the balance of opinion seems to sustain the view that this epoch should be placed after the close of the third glaciation and before the advent of the fourth, that is, during the Third Interglacial Stage.