﻿CHAMBEELIN 
  WILLIS 
  589 
  

  

  might 
  have 
  been 
  overlooked. 
  The 
  exploration 
  occupied 
  a 
  number 
  of 
  

   years, 
  demanded 
  infinite 
  patience, 
  suspension 
  of 
  judgment, 
  critical 
  

   acumen, 
  continuous 
  self-instruction 
  in 
  the 
  related 
  branches 
  of 
  physics, 
  

   chemistry, 
  and 
  celestial 
  mechanics. 
  Only 
  a 
  disciplined 
  mind, 
  trained 
  

   absolutely 
  to 
  subordinate 
  self-opinion 
  to 
  fact 
  could 
  have 
  sustained 
  

   the 
  effort. 
  If 
  the 
  example 
  of 
  Darwin 
  was 
  not 
  consciously 
  recognized, 
  

   it 
  was 
  nevertheless 
  paralleled. 
  

  

  Chamberlin 
  recognized 
  that 
  terrestrial 
  evolution 
  is 
  a 
  dynamic 
  

   process. 
  Energy 
  and 
  force 
  are 
  vital, 
  matter 
  and 
  environment 
  simply 
  

   important. 
  This 
  is 
  the 
  physicist's 
  view, 
  more 
  rarely 
  the 
  geologist's. 
  

   The 
  dynamics 
  of 
  the 
  globe 
  are 
  planetary 
  dynamics. 
  This 
  is 
  the 
  as- 
  

   tronomer's 
  field, 
  the 
  geologist's 
  only 
  in 
  the 
  sense 
  that 
  "astronomy 
  is 
  

   the 
  foreign 
  department 
  of 
  geology." 
  

  

  Chamberlin's 
  exploration 
  thus 
  reached 
  into 
  the 
  realms 
  of 
  physics 
  

   and 
  astronomy. 
  His 
  powers 
  of 
  inductive 
  reasoning 
  did 
  not 
  fail 
  him 
  

   there, 
  but 
  he 
  was 
  not 
  prepared 
  to 
  apply 
  the 
  methods 
  of 
  higher 
  mathe- 
  

   matics 
  to 
  research, 
  as 
  is 
  commonly 
  done 
  in 
  those 
  sciences. 
  He 
  

   required 
  associates 
  to 
  aid 
  in 
  testing 
  hypotheses. 
  

  

  It 
  does 
  not 
  appear 
  that 
  his 
  environment 
  developed 
  favorable 
  

   associations 
  prior 
  to 
  his 
  entrance 
  into 
  the 
  faculty 
  of 
  Chicago 
  University 
  

   (1892). 
  While 
  at 
  Columbian 
  he 
  was 
  occupied 
  with 
  the 
  more 
  strictly 
  

   geologic 
  problems 
  of 
  Pleistocene 
  classification. 
  His 
  associates, 
  

   Gilbert, 
  Button, 
  and 
  other 
  fellow 
  geologists, 
  thought 
  in 
  the 
  narrower 
  

   field 
  of 
  terrestrial 
  processes, 
  and 
  he 
  with 
  them. 
  He 
  was 
  one 
  of 
  a 
  group 
  

   of 
  similar 
  thinkers 
  similarly 
  equipped. 
  At 
  Chicago 
  it 
  was 
  different. 
  

   In 
  that 
  newly 
  organized 
  faculty 
  were 
  leaders 
  in 
  related 
  sciences, 
  and 
  

   among 
  the 
  students 
  there 
  appeared 
  from 
  time 
  to 
  time 
  competent 
  

   aids 
  eager 
  to 
  work 
  with 
  the 
  master 
  of 
  research. 
  

  

  Two 
  men 
  stand 
  out 
  as 
  Chamberlin's 
  chief 
  associates: 
  Rollin 
  D. 
  

   Salisbury 
  and 
  Forest 
  R. 
  Moulton. 
  In 
  different 
  fields 
  each 
  one 
  con- 
  

   tributed 
  materially 
  to 
  his 
  work. 
  Salisbury, 
  a 
  student 
  at 
  Beloit, 
  

   devoted 
  himself 
  loyally 
  throughout 
  his 
  whole 
  career 
  to 
  supporting 
  

   Chamberlin. 
  He 
  worked 
  with 
  his 
  chief 
  in 
  glacial 
  geology, 
  in 
  the 
  

   organization 
  and 
  conduct 
  of 
  the 
  department 
  of 
  geology 
  at 
  Chicago, 
  

   and 
  in 
  the 
  editorial 
  work 
  on 
  the 
  Journal 
  of 
  Geology, 
  which 
  they 
  

   founded. 
  He 
  collaborated 
  in 
  the 
  preparation 
  of 
  their 
  comprehensive 
  

   Manual 
  of 
  Geology, 
  of 
  which 
  he 
  wrote 
  important 
  sections. 
  He 
  was 
  

   more 
  than 
  a 
  helpful 
  assistant 
  in 
  innumerable 
  subsidiary 
  tasks 
  of 
  

   administration, 
  and 
  he 
  ranked 
  high 
  as 
  a 
  teacher. 
  It 
  was 
  for 
  Cham- 
  

   berlin 
  a 
  great 
  good 
  fortune 
  to 
  have 
  drawn 
  to 
  himself 
  a 
  spirit 
  so 
  loyal, 
  

   a 
  collaborator 
  so 
  competent, 
  a 
  fellow 
  teacher 
  so 
  superior 
  as 
  Salisbury. 
  

  

  Moulton 
  brought 
  to 
  the 
  cooperation 
  with 
  Chamberlin 
  the 
  resources 
  

   of 
  a 
  mathematician 
  and 
  an 
  astronomer. 
  He 
  was 
  much 
  younger 
  than 
  

   Chamberhn, 
  and 
  during 
  their 
  association 
  developed 
  from 
  a 
  young 
  

   instructor 
  to 
  a 
  mature 
  scientist. 
  In 
  their 
  research 
  the 
  method 
  of 
  

  

  