W 3to" «to> ■9« .. .^ y^K^ V)\ "W 



AHBUHSTEAO 



MAP OF EUROPE, SHOWING THE GREAT SHEET OF ICE THAT COVERED THE BRITISH 



ISLES, SCANDINAVIA, GERMANY, AND HALF OF RUSSIA DURING 



THE SECOND GLACIAL AGE 



The ice fields and glaciers, shown in white on this map, then reached their greatest 

 extension, and eastern Europe was depressed to such an extent that the Black and Caspian 

 and Aral seas formed one continuous body of water. After the ice retreated the Heidelberg 

 man appeared, an immigrant from Asia, probably 250,000 years ago (see page 119). 



dealing with the archaeological side, such 

 as that of Dechelette, recently killed in 

 battle (for, incidentally, the French ar- 

 chaeologists do not permit their studies of 

 the dead to shrivel their patriotic devo- 

 tion to living duty), and the magnificent 

 volumes of Cartaillac, Brenil, and Ober- 

 maier, which we owe to the generous 

 scientific enthusiasm of the Prince of 

 Monaco. 



There are other books on the geologi- 

 cal side of the period, such as the notable 

 volumes of Chamberlin and Geikie, which 

 could have been written only by special- 

 ized experts. There are many studies 

 of human remains and of the remains 

 of the accompanying beast faunas by 



French, English, and German writers. 

 All of these are indispensable to the 

 scholar ; but each covers only one facet 

 of the crystal. 



Finally, there are books dealing with 

 the general subject — excellent books — 

 but none of them possessing all the quali- 

 ties which are essential to the full under- 

 standing of the problem. Lord Avebury's 

 "Prehistoric Times" was written when it 

 was still necessary to argue with those 

 who disbelieved in the antiquity of man, 

 their reasons being substantially similar 

 to those of the other conservatives who 

 a couple of centuries earlier treated as 

 impious the statement that the earth went 

 round the sun. 



115 



