THE PKIXCESS croup; MACIIU i'lCCllU 



A general view of the ornamental wall and the semicircular tower, together with the 

 second story of the adjoining house, looking toward the principal agricultural terraces and 

 our camp in the distance ('see page 471). 



Stich i^edlogical evidence as we had 

 been a1)le to collect in the limited time at 

 our disposal was presented by Professor 

 r>owman in a paper published at the 

 same time. Professor Bowman had re- 

 ported several years before finding evi- 

 dences of man's existence in the central 

 Andes in late Glacial or early post-(ila- 

 cial times. He was led to believe that 

 the actual remains of man fotmd in tiie 

 Cuzco basin were embedded in gravels 

 of a still earlier date. 



DKTKKMI.VIxr, THi-: .\GE OF THESE BONES 



In his interpretation of the geological 

 and geograjjhical evidence he reached the 

 conclusion that the beds belonged to a 



Glacial series, and that the age of the 

 vertebrate remains might be provisionally 

 estimated at from 20 to 40 thousand 

 years. 



But he called attention to the weakness 

 of the case, lying in the following facts : 

 ( i) that certain of the bones could not 

 be sharj^ly differentiated from those of 

 modern cattle, and (2) that it was within 

 the limits of possibility that the bluff in 

 which the bones were found might be 

 faced by younger gravel, antl that there- 

 fore the bones had been in gravel veneer 

 deposited during later periods of partial 

 valley-filling. 



He experienced grave doubts as to his 

 own conclusions, liecause we were only 



491 



