98 



SOCIAL EVOLUTION 



The tomb is composed of several megaliths — one for the 

 floor, others upright or on edge, supporting a horizontal 

 slab which covers the whole space enclosed."^'^ Some of 

 these sepulchral chambers are covered with great piles 



Frum Dfch.-l.-tt.-. "Ma.mrl ir Arrl„:r,l,,t:,v I'r,'lii>l..]Hiur ' 



Fkure 4i;. Neolithic Moiiuuients, a "Doliiuii." 



of stones or earth. These monuments are known as bar- 

 rows. This was the period when the Swiss lake dwell- 

 ings were constructed'."*^ The prehistoric monuments of 

 the New World are more imposing than these barrows 

 of the Old World.^*^ The ruins of palaces, temples, and 

 aqueducts of the ancient Peruvians and the similar colos- 

 sal constructions of the ancient inhabitants of Bolivia 

 and Mexico, surpass most of the other monumental re- 

 mains of prehistoric man. But the men of the Neolithic 



48 See figure 46. 



^9 Keane, oj). cit.. p. 121, Lubbock, Prc-IIistoric Times, eh. vi. 



50 See figure 47. 



