National Geographic : 1916 Feb
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.