﻿CHITTENDEX.] 
  

  

  THE 
  SAN 
  JUAN 
  DISTRICT. 
  

  

  363 
  

  

  Peet. 
  

  

  Station 
  43, 
  butte 
  south 
  of 
  San 
  Juan 
  5,430 
  

  

  Station 
  45, 
  butte 
  on 
  San 
  Juan 
  below 
  Eecapture 
  Creek 
  5,298 
  

  

  Station 
  50, 
  butte 
  on 
  Navajo 
  Creek 
  5,321 
  

  

  Station 
  54, 
  west 
  m(Ssa, 
  Carriso 
  Mountains 
  ^, 
  042 
  

  

  Station 
  55, 
  bluft" 
  above 
  West 
  Fork 
  of 
  Navajo 
  Creek 
  5,659 
  

  

  The 
  above 
  altitudes 
  are 
  all 
  based 
  on 
  the 
  leveled 
  altitude 
  of 
  Colorado 
  

   Springs, 
  though 
  the 
  main 
  part 
  of 
  them 
  are 
  computed 
  from 
  the 
  Parrott 
  

   City 
  base, 
  which 
  was 
  itself 
  computed 
  from 
  Colorado 
  Springs 
  by 
  single 
  

   synchronous 
  observations 
  at 
  7 
  a. 
  m., 
  2 
  p. 
  m., 
  and 
  9 
  p. 
  m., 
  between 
  

   August 
  1 
  and 
  September 
  4. 
  The 
  results 
  of 
  these 
  computations 
  I 
  give 
  

   below 
  in 
  tabular 
  form, 
  together 
  with 
  their 
  variation 
  from 
  the 
  mean. 
  

   The 
  difference 
  in 
  altitude 
  of 
  the 
  two 
  places 
  is 
  about 
  2,600 
  feet, 
  and 
  their 
  

   distance 
  apart 
  horizontally 
  something 
  over 
  200 
  miles, 
  and 
  across 
  much 
  

   heavy 
  mountain 
  country. 
  The 
  general 
  agreement 
  of 
  the 
  results 
  is 
  much 
  

   better 
  than 
  could 
  have 
  been 
  expected, 
  and 
  speaks 
  well 
  for 
  the 
  correct- 
  

   ness 
  of 
  those 
  heights 
  necessarily 
  referred 
  directly 
  to 
  Colorado 
  Springs. 
  

   I 
  have 
  taken 
  the 
  absolute 
  mean 
  of 
  all 
  the 
  results, 
  throwing 
  out 
  none 
  for 
  

   electricity 
  ou 
  either 
  side. 
  From 
  studies 
  of 
  the 
  hypsometric 
  work 
  in 
  

   other 
  parts 
  of 
  Colorado, 
  I 
  am 
  inclined 
  to 
  think 
  this 
  result 
  slightly 
  too 
  

   loiv, 
  but 
  up 
  to 
  this 
  time 
  have 
  found 
  no 
  law 
  on 
  which 
  reliable 
  correc- 
  

   tions 
  may 
  be 
  based. 
  

  

  Computation 
  of 
  the 
  height 
  of 
  Farrott 
  City 
  from 
  Colorado 
  Springs, 
  synchronous 
  Imrometric 
  

   ohservations, 
  at 
  7 
  a. 
  m., 
  2 
  p. 
  m., 
  and 
  9 
  jj. 
  m., 
  during 
  the 
  month 
  of 
  August, 
  1875. 
  

  

  

  7 
  a. 
  m. 
  

  

  2 
  p. 
  

  

  m. 
  

  

  9 
  p. 
  

  

  m. 
  

  

  nay. 
  

  

  Date. 
  

  

  1 
  

  

  o 
  

   "^ 
  d 
  

  

  o 
  a 
  

  

  1 
  

  

  w 
  

  

  o 
  

  

  "^ 
  a 
  

  

  => 
  3 
  

  

  i 
  

  

  w 
  

  

  o 
  . 
  ' 
  

  

  "*^ 
  a 
  

   iZ 
  <^ 
  

   t^ 
  S 
  

  

  o 
  " 
  

  

  1 
  

   o 
  

  

  o 
  

  

  

  8, 
  551 
  

   8, 
  633 
  

   8,536 
  

   8,514 
  

   8,574 
  

   8,619 
  

   8,515 
  

   8,503 
  

   8,566 
  

   8,603 
  

   8,594 
  

   8, 
  548 
  

   8,607 
  

   8,551 
  

   8,602 
  

   8,639 
  

   8, 
  602 
  

   8,656 
  

   8,582 
  

   8,600 
  

   8,655 
  

   8,521 
  

   8,501 
  

   8,546 
  

   8,494 
  

   8,544 
  

   8, 
  551 
  

   8, 
  622 
  

   S, 
  656 
  

   8, 
  493 
  

   8,514 
  

  

  + 
  60 
  

  

  - 
  22 
  

   + 
  75 
  

   + 
  97 
  

   + 
  37 
  

  

  - 
  7 
  

   + 
  96 
  

   + 
  108 
  

   + 
  45 
  

   + 
  8 
  

   + 
  17 
  

   + 
  63 
  

   + 
  4 
  

   + 
  60 
  

  

  .+ 
  9 
  

  

  - 
  28 
  

   + 
  9 
  

  

  - 
  45 
  

   + 
  29 
  

  

  + 
  11 
  

  

  - 
  44 
  

   + 
  90 
  

   + 
  110 
  

   + 
  65 
  

   + 
  117 
  

   + 
  67 
  

   + 
  60 
  

  

  - 
  11 
  

  

  - 
  45 
  

   +118 
  

   + 
  97 
  

  

  8,654 
  

   8,615 
  

   8,605 
  

   8,691 
  

   8,650 
  

   8,768 
  

   8, 
  598- 
  

   8,587 
  

   8,704 
  

   8,750 
  

   8,701 
  

   8,663 
  

   8,692 
  

   8,719 
  

   8, 
  657 
  

   8,651 
  

   8,699 
  

   8,041 
  

   8,679 
  

   8,710 
  

   8,771 
  

   8,563 
  

   8,533 
  

   8, 
  584 
  

   8,593 
  

   8,598 
  

   8,663 
  

   8,632 
  

   8 
  612 
  

   8,536 
  

   8, 
  612 
  

  

  - 
  43 
  

  

  - 
  4 
  

   + 
  6 
  

  

  - 
  80 
  

  

  - 
  39 
  

   -157 
  

   + 
  13 
  

   + 
  24 
  

  

  - 
  93 
  

   -139 
  

  

  - 
  90 
  

  

  - 
  52 
  

  

  - 
  81 
  

   -108 
  

  

  - 
  46 
  

  

  - 
  40 
  

   •^ 
  88 
  

  

  - 
  30 
  

  

  - 
  68 
  

  

  - 
  99 
  

   -160 
  

   + 
  48 
  

   + 
  78 
  

   + 
  73 
  

   + 
  18 
  

   + 
  13 
  

  

  - 
  52 
  

  

  - 
  21 
  

  

  - 
  1 
  

   + 
  75 
  

  

  - 
  1 
  

  

  8,598 
  

   8,557 
  

   8,628 
  

   8,651 
  

   8,557 
  

   8,668 
  

   8,535 
  

   8,585 
  

   8,653 
  

   8,683 
  

   8,607 
  

   8,559 
  

   8, 
  565 
  

   8,573 
  

   8,572 
  

   8,563 
  

   8, 
  702 
  

   8,675 
  

   8,637 
  

   8,669 
  

   8,609 
  

   8,551 
  

   8,535 
  

   8,514 
  

   8,520 
  

   8, 
  579 
  

   8,591 
  

   8,636 
  

   8,512 
  

   8,498 
  

   8,563 
  

  

  + 
  13 
  

  

  + 
  54 
  

  

  - 
  17 
  

  

  - 
  40 
  

   + 
  54 
  

  

  - 
  57 
  

   + 
  76 
  

   + 
  26 
  

  

  - 
  42 
  

  

  - 
  72 
  

   + 
  4 
  

   + 
  52 
  

   + 
  46 
  

   + 
  38 
  

   + 
  39 
  

   + 
  48 
  

  

  - 
  91 
  

  

  - 
  64 
  

  

  - 
  26 
  

  

  - 
  58 
  

   + 
  2 
  

   + 
  30 
  

   + 
  76 
  

   + 
  97 
  

   + 
  91 
  

   + 
  32 
  

   + 
  20 
  

  

  - 
  25 
  

   + 
  99 
  

   +113 
  

   + 
  48 
  

  

  8,©0I 
  

   8,601 
  

   8,589 
  

   8,618 
  

   8,393 
  

   S,6S5 
  

   8,549 
  

   8,558 
  

   8,.607 
  

   8,676 
  

   8,1534 
  

   8,590 
  

   8,618 
  

   8,614 
  

   8,6 
  ••® 
  

   8,687 
  

   8,671 
  

   8,657 
  

   S,fc3-^ 
  

   8,659 
  

   8,678 
  

   8,545 
  

   8,5-43 
  

   8,548 
  

   8,557 
  

   8,573 
  

   8,601 
  

   8,630 
  

   8.593 
  

   8.509 
  

   8,573 
  

  

  + 
  10 
  

  

  o 
  

  

  + 
  10 
  

  

  3 
  

  

  + 
  13 
  

  

  4 
  

  

  - 
  t 
  

  

  5 
  

  

  + 
  18 
  

  

  6 
  

  

  - 
  74 
  

  

  I 
  :::::::::::::::;:]: 
  

  

  + 
  62 
  

   + 
  53 
  

  

  9 
  

  

  + 
  4 
  

  

  10 
  

  

  11 
  

  

  - 
  67 
  

  

  - 
  23 
  

  

  12 
  

  

  + 
  21 
  

  

  13 
  

  

  7 
  

  

  14 
  

  

  - 
  3 
  

  

  15 
  

  

  + 
  1 
  

  

  16 
  

  

  - 
  6 
  

  

  17 
  

  

  - 
  60 
  

  

  18 
  

  

  - 
  46 
  

  

  19 
  

  

  - 
  21 
  

  

  20 
  

  

  21 
  

  

  - 
  48 
  

  

  - 
  67 
  

  

  22 
  

  

  + 
  66 
  

  

  23 
  

  

  + 
  88 
  

  

  24 
  

  

  + 
  63 
  

  

  25 
  

  

  + 
  54 
  

  

  26 
  

  

  + 
  :*s 
  

  

  27 
  

  

  + 
  10 
  

  

  28 
  

  

  29 
  

  

  - 
  19 
  

  

  + 
  IS 
  

  

  30 
  

  

  102 
  

  

  31 
  

  

  + 
  38 
  

  

  

  

  

  8,58* 
  

  

  + 
  29 
  

  

  8,655 
  

  

  _ 
  44 
  

  

  8,595 
  

  

  + 
  16 
  

  

  8,611 
  

  

  00 
  

  

  

  

  The 
  altitudes 
  of 
  the 
  La 
  Plata 
  peaks 
  are 
  all 
  slightly 
  less 
  than 
  Hesperis 
  

   Peak, 
  the 
  highest 
  given. 
  As 
  nearly 
  as 
  I 
  can 
  judge 
  from 
  verticle 
  angles 
  

   taken 
  from 
  my 
  topographical 
  stations 
  in 
  the 
  mass, 
  there 
  is 
  no 
  other 
  

  

  