THP] ORIGIN AND ANT](,)U1T\' OF MAN 87 



sion of migrations corresponding to climatic changes, 

 remains of human habitations accumulated at different 

 levels in the floor sands of these ancient caverns. We 

 find at different levels implements, representing by the 



After Cartailhac and Brcuil. 



Figure 37. ^lap showing tlie Location of Prehistoric Caves, all 

 of them ornamented by Paintings and. Drawings. 



grade of their workmanship, various cultural stages of- 

 ten corresponding to stratigraphical sequence. 



In some sections of the continent there is a break in 

 the continuity of cultural development from the upper 

 paleolithic or rough stone age to the neolithic or pol- 

 ished stone age. Keane says that the elements of their 

 respective cultures differ so widely as almost to suggest 

 some violent dislocation or sudden cataclj^sm.^^ The 

 consequence is a prevailing impression that there was 

 an abrupt transition from the rude culture of the rough 

 stone men to the more developed culture of the polished 

 stone men. Notably in Britain there seems to have been 



43 Keanc, op. fit., p. 110. 



