﻿Gould 
  — 
  Phases 
  of 
  the 
  Dakota 
  Cretaceous 
  in 
  Nebraska. 
  433 
  

  

  The 
  origin 
  of 
  Dakota 
  water 
  is 
  a 
  mooted 
  question. 
  Some 
  

   authorities 
  look 
  for 
  the 
  source 
  of 
  supply 
  in 
  the 
  Dakota 
  out- 
  

   crops 
  along 
  the 
  eastern 
  slope 
  of 
  the 
  .Rocky 
  Mountains. 
  They 
  

   would 
  consider 
  the 
  water 
  artesian, 
  and 
  argue 
  that 
  deep 
  wells 
  

   over 
  the 
  central 
  part 
  of 
  the 
  State 
  should 
  tap 
  this 
  supply 
  and 
  

   furnish 
  artesian 
  water. 
  This 
  theory 
  seems 
  quite 
  tenable, 
  but 
  

   in 
  practice 
  it 
  remains 
  to 
  be 
  proven. 
  That 
  it 
  will 
  not 
  account 
  

   for 
  all 
  Dakota 
  springs 
  is 
  demonstrated 
  by 
  the 
  fact 
  that 
  in 
  

   several 
  instances 
  some 
  of 
  the 
  best 
  springs 
  issue 
  from 
  isolated 
  

   buttes, 
  cut 
  off 
  by 
  erosion 
  from 
  the 
  main 
  body 
  of 
  the 
  Dakota. 
  

   It 
  seems 
  more 
  probable 
  that 
  much 
  of 
  the 
  water 
  supply 
  comes 
  

   from 
  local 
  rainfall, 
  although 
  until 
  the 
  artesian 
  theory 
  is 
  either 
  

   proven 
  or 
  disproven 
  we 
  may 
  well 
  continue 
  to 
  look 
  farther 
  

   away 
  for 
  a 
  part 
  of 
  the 
  supply. 
  

  

  The 
  most 
  interesting 
  point 
  connected 
  with 
  the 
  Dakota, 
  from 
  

   the 
  standpoint 
  of 
  pure 
  science, 
  is 
  of 
  course 
  the 
  fossil 
  leaves. 
  

   Few 
  formations 
  in 
  the 
  world 
  have 
  yielded 
  so 
  many 
  species. 
  

   Of 
  the 
  nearly 
  five 
  hundred 
  forms 
  known 
  to 
  exist, 
  Nebraska 
  

   furnishes 
  a 
  large 
  per 
  cent. 
  Numerous 
  localities 
  are 
  known 
  to 
  

   yield 
  leaves. 
  The 
  best 
  collecting 
  ground 
  so 
  far 
  discovered 
  in 
  

   Nebraska 
  is 
  five 
  miles 
  south 
  of 
  Endicott, 
  Jefferson 
  County, 
  

   and 
  near 
  Decatur, 
  Burt 
  County. 
  Very 
  little 
  systematic 
  work 
  

   has 
  been 
  done 
  on 
  these 
  leaves 
  for 
  a 
  number 
  of 
  years, 
  but 
  at 
  

   the 
  present 
  time 
  the 
  collections 
  of 
  the 
  past 
  summer 
  are 
  being 
  

   studied 
  in 
  the 
  department 
  of 
  Geology 
  in 
  the 
  University 
  of 
  

   Nebraska, 
  and 
  it 
  is 
  expected 
  that 
  a 
  detailed 
  report 
  on 
  the 
  

   subject 
  will 
  shortly 
  be 
  published. 
  

  

  