ON ANCIENT EGYPTIAN SCULPTURES. 315 



of the period allowed by the received chronology, for the 

 development of those physical varieties which distinguish 

 the different races of men/'* though felt as "one of the 

 greatest difficulties connected with the opinion that all 

 mankind are descended from one primitive stock/' will not 

 affect those who believe in the existence of separate species 

 of men. 



But I can do no more than allude to these questions, and 

 must return to the archaeological and geological considera- 

 tions which fall more strictly within the scope of my present 

 work. 



I have been much struck, when standing at the feet of 

 glaciers, by the great size of the terminal moraines, and the 

 length of time which must have been required for their forma- 

 tion. Let us take as an instance the Nigaard glacier in the Yus- 

 tedal, on the Sognefjord. The Norwegian glaciers no doubt 

 covered formerly a much larger area than that which they 

 now occupy. They retreated as the cold diminished; but 

 we have already seen that man was present in Western 

 Europe, when the general temperature was several degrees 

 lower than it is at present ; and we shall probably, therefore, 

 be within the mark if we suppose that the glacier at Yustedal 

 has retreated at least a mile up the valley since the period of 

 the river-drift gravels, and the entrance of man into Europe. 

 Now the terminal moraine of the glacier covers the whole of 

 this space with great blocks of stones, thousands and hun- 

 dreds of thousands in number, and yet, although all these 

 have probably been brought down in the human period, I 

 could only see a few blocks on the lower end of the glacier 

 itself. 



As far as Denmark is concerned we must, for the present, 

 rely principally on the double change which has taken place 

 in the prevalent vegetation. Now the beech forests are the 



* Prichard, I.e. p. 552. 



