150 



POPULAR SCIENCE MONTHLY. 



have been known. But a distinct advance is indicated by the skill- 

 fully fashioned stone implements. Such long barrows occur most 

 frequently in the southwest of England, in the counties of Wilts and 

 Gloucestershire, especially in the bleak uplands of the Coteswold 



Shetland Islands. 



Scandinavian Mixed Type. 



Old Black Breed " Type. 



Hills; but they are also found much farther north as well. The 

 people of this period were, as we have said, like their predecessors, 

 extremely long-headed. The cephalic index in the life was as low 

 as 72, several units below any average in Europe to-day, save per- 



