﻿112 
  C. 
  Keyes 
  — 
  A 
  Rotating 
  Straticulate 
  Spheroid. 
  

  

  film 
  of 
  the 
  earth 
  in 
  the 
  same 
  way 
  that 
  there 
  is 
  holding 
  

   back 
  of 
  the 
  atmospheric 
  shell 
  which 
  gives 
  rise 
  to 
  wind 
  

   pressure 
  appears 
  to 
  induce 
  phenomena 
  which 
  have 
  been 
  

   mistaken 
  for 
  compressive 
  stresses 
  that 
  in 
  days 
  gone 
  by 
  

   seemed 
  easiest 
  ascribed 
  to 
  the 
  contraction 
  of 
  a 
  cooling 
  

   globe. 
  

  

  The 
  geotectonic 
  effects 
  of 
  rotary 
  retardation 
  seem- 
  

   ingly 
  afford 
  for 
  the 
  first 
  time 
  a 
  satisfactory 
  explanation 
  

   of 
  some 
  of 
  those 
  anomalous 
  and 
  puzzling 
  features 
  which 
  

   have 
  always 
  been 
  associated 
  with 
  those 
  curious 
  mountain 
  

   ranges 
  of 
  the 
  Great 
  Basin 
  of 
  western 
  America 
  wherein 
  

   some 
  of 
  them 
  appear 
  to 
  have 
  been 
  upraised 
  through 
  

   faulting 
  in 
  such 
  a 
  manner 
  that 
  the 
  tumbled 
  mountain 
  

   blocks 
  have 
  been 
  aptly 
  likened 
  to 
  floating 
  ice-cakes 
  in 
  a 
  

   river 
  at 
  time 
  of 
  the 
  spring 
  break-up. 
  

  

  Finally 
  with 
  the 
  force 
  and 
  rate 
  of 
  retardation 
  and 
  the 
  

   amount 
  of 
  orographic 
  shortening 
  capable 
  of 
  mathemat- 
  

   ical 
  expression 
  a 
  ready 
  means 
  is 
  provided 
  for 
  gauging 
  

   in 
  units 
  of 
  human 
  time 
  the 
  age 
  of 
  every 
  mountain 
  uplift, 
  

   for 
  determining 
  very 
  exactly 
  in 
  like 
  terms 
  the 
  periodicity 
  

   of 
  every 
  diastrophic 
  movement, 
  and 
  for 
  evaluating 
  in 
  

   years 
  the 
  span 
  of 
  every 
  era, 
  period, 
  epoch 
  and 
  stage 
  of 
  

   the 
  statigraphic 
  record 
  since 
  the 
  beginning 
  o£ 
  life 
  on 
  our 
  

   globe. 
  

  

  Des 
  Moines, 
  Iowa. 
  

  

  