﻿2 
  Bingham 
  — 
  Results 
  of 
  the 
  Peruvian 
  Expedition 
  of 
  191°2. 
  

  

  investigation 
  of 
  the 
  Ayahuaycco 
  Quebrada 
  and 
  of 
  the 
  Cuzco 
  

   Valley. 
  

  

  The 
  Expedition 
  of 
  1912 
  reached 
  Cuzco 
  in 
  June 
  and 
  left 
  at 
  

   the 
  end 
  of 
  November. 
  Nearly 
  three 
  months 
  were 
  spent 
  in 
  a 
  

   careful 
  topographic 
  survey 
  of 
  the 
  Cuzco 
  Valley. 
  A 
  portion 
  of 
  

   that 
  map 
  is 
  published 
  at 
  this 
  time. 
  The 
  remainder 
  will 
  appear 
  

   in 
  connection 
  with 
  the 
  complete 
  geological 
  report 
  of 
  the 
  Expe- 
  

   dition. 
  

  

  Remembering 
  that 
  I 
  had 
  seen 
  many 
  bones 
  in 
  position 
  in 
  

   various 
  parts 
  of 
  the 
  vicinity, 
  and 
  feeling 
  that 
  it 
  would 
  be 
  

   entirely 
  impracticable 
  to 
  bring 
  home 
  all 
  this 
  bone 
  material 
  

   without 
  knowing 
  its 
  value, 
  I 
  persuaded 
  Dr. 
  Eaton, 
  who 
  had 
  

   reported 
  on 
  the 
  bones 
  brought 
  home 
  in 
  1911, 
  to 
  accompany 
  

   the 
  Peruvian 
  Expedition 
  of 
  1912 
  in 
  the 
  capacity 
  of 
  osteologist. 
  

   The 
  approved 
  plan 
  for 
  his 
  work 
  included 
  : 
  (a) 
  a 
  careful 
  search 
  

   for 
  bone 
  deposits 
  in 
  the 
  cliffs 
  of 
  the 
  Ayahuaycco 
  Quebrada 
  

   and 
  in 
  other 
  similar 
  cliffs 
  in 
  the 
  vicinity 
  wherever 
  located 
  

   within 
  easy 
  reach 
  of 
  trails 
  ; 
  (b) 
  search 
  for 
  bone 
  deposits 
  at 
  

   heights 
  not 
  easily 
  accessible 
  from 
  trails, 
  — 
  such 
  deposits 
  rarely 
  

   coming 
  within 
  the 
  category 
  of 
  human 
  burials, 
  and 
  such 
  search 
  

   requiring 
  the 
  use 
  of 
  rope 
  slings 
  ; 
  (c) 
  especial 
  attention 
  to 
  be 
  

   paid 
  to 
  the 
  occurrence 
  of 
  remains 
  of 
  pre-Hispanic 
  and 
  Hispanic 
  

   animals, 
  including 
  domestic 
  poultry, 
  horses, 
  asses, 
  mules 
  and 
  

   cattle 
  ; 
  (d) 
  examination 
  of 
  skeletons 
  of 
  contemporary 
  bovines, 
  

   to 
  determine 
  the 
  value 
  of 
  the 
  peculiar 
  characteristics 
  noted 
  in 
  

   the 
  fragmentary 
  bovine 
  rib 
  found 
  in 
  1911 
  ; 
  and, 
  (e) 
  an 
  exami- 
  

   nation 
  of 
  the 
  so-called 
  " 
  Cuzco 
  ash-deposits," 
  to 
  determine 
  their 
  

   origin 
  and 
  true 
  character. 
  

  

  It 
  also 
  seemed 
  to 
  me 
  that 
  it 
  was 
  essential 
  to 
  have 
  a 
  geologist 
  

   make 
  a 
  far 
  more 
  comprehensive 
  study 
  of 
  the 
  geology 
  of 
  the 
  

   Cuzco 
  Basin 
  than 
  had 
  been 
  possible 
  in 
  the 
  few 
  days 
  at 
  Prof. 
  

   Bowman's 
  disposal 
  in 
  1911. 
  Moreover 
  it 
  seemed 
  advisable 
  

   that 
  these 
  geological 
  studies 
  should 
  be 
  made 
  by 
  an 
  independent 
  

   and 
  impartial 
  observer, 
  who 
  should 
  be 
  in 
  no 
  wise 
  influenced 
  by 
  

   any 
  necessity 
  for 
  substantiating 
  the 
  previous 
  findings, 
  nor 
  by 
  

   any 
  desire 
  to 
  discredit 
  them. 
  As 
  the 
  previous 
  work 
  had 
  been 
  

   done 
  by 
  a 
  Yale 
  man, 
  it 
  seemed 
  to 
  me 
  most 
  appropriate 
  that 
  

   the 
  proposed 
  studies 
  should 
  also 
  be 
  done 
  by 
  a 
  member 
  of 
  the 
  

   same 
  Faculty, 
  and 
  I 
  accordingly 
  considered 
  myself 
  most 
  fortu- 
  

   nate 
  in 
  being 
  able 
  to 
  persuade 
  Prof. 
  Herbert 
  E. 
  Gregory, 
  

   Silliman 
  Professor 
  of 
  Geology 
  in 
  Yale 
  University, 
  to 
  accept 
  

   the 
  commission 
  of 
  Geologist 
  of 
  the 
  1912 
  Expedition, 
  and 
  to 
  go 
  

   to 
  Cuzco 
  and 
  make 
  a 
  special 
  study 
  of 
  the 
  Cuzco 
  gravels. 
  His 
  

   report 
  on 
  this 
  subject 
  and 
  Dr. 
  Eaton's 
  on 
  the 
  vertebrate 
  

   remains 
  which 
  he 
  found 
  in 
  the 
  Cuzco 
  gravels 
  are 
  presented 
  

   herewith. 
  While 
  the 
  results 
  are 
  not 
  as 
  exciting 
  as 
  some 
  people 
  

   wish 
  they 
  were, 
  it 
  is 
  a 
  great 
  satisfaction 
  to 
  me 
  to 
  have 
  been 
  

   able 
  to 
  get 
  to 
  the 
  bottom 
  of 
  this 
  interesting 
  problem. 
  

  

  