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  THE 
  UNFATHOMED 
  UNIVERSE 
  

  

  when 
  each 
  recognises 
  its 
  abstractness 
  ; 
  and 
  the 
  hope 
  of 
  their 
  

   leading 
  on 
  to 
  a 
  philosophical 
  order 
  is 
  in 
  proportion 
  to 
  the 
  

   clearness 
  with 
  which 
  it 
  is 
  recognised 
  that 
  a 
  synthesis 
  is 
  not 
  

  

  additive. 
  

  

  It 
  is 
  customary 
  to 
  speak 
  of 
  the 
  unity 
  of 
  the 
  sciences, 
  and 
  

   no 
  doubt 
  they 
  are 
  beginning 
  to 
  form 
  a 
  system 
  or 
  hierarchy, 
  

   but 
  the 
  ideal 
  of 
  one 
  science 
  of 
  Nature 
  the 
  ideal 
  of 
  Descartes, 
  

   of 
  Hobbes, 
  of 
  Leibniz 
  is 
  giving 
  place 
  to 
  an 
  ideal 
  of 
  cor- 
  

   relation 
  rather 
  than 
  of 
  unity. 
  There 
  has 
  been 
  much 
  profit- 
  

   able 
  breaking 
  down 
  of 
  artificial 
  partitions, 
  much 
  fruitful 
  

   co-operation 
  of 
  several 
  sciences 
  on 
  one 
  problem, 
  many 
  a 
  use- 
  

   ful 
  discovery 
  of 
  a 
  common 
  denominator 
  bringing 
  apparently 
  

   disconnected 
  facts 
  into 
  comparable 
  relationship, 
  but 
  the 
  

   materialistic 
  proposal 
  to 
  make 
  physiology 
  a 
  branch 
  of 
  

   physics, 
  and 
  psychology 
  a 
  branch 
  of 
  physiology, 
  has 
  not 
  been 
  

   substantiated. 
  Biology 
  and 
  Psychology 
  remain 
  autonomous, 
  

   with 
  categories 
  of 
  their 
  own. 
  Treating 
  of 
  the 
  work 
  of 
  science, 
  

   Prof. 
  A. 
  E. 
  Dolbear 
  writes 
  : 
  " 
  By 
  explanation 
  is 
  meant 
  the 
  

   presentation 
  of 
  the 
  mechanical 
  antecedents 
  for 
  a 
  phenomenon 
  

   in 
  so 
  complete 
  a 
  way 
  that 
  no 
  supplementary 
  or 
  unknown 
  

   factors 
  are 
  necessary." 
  If 
  that 
  kind 
  of 
  explanation 
  were 
  

   feasible 
  throughout, 
  there 
  would 
  be 
  one 
  science 
  of 
  Nature, 
  

   in 
  terms 
  of 
  ideal 
  motions, 
  expressible 
  in 
  mathematical 
  

   formula 
  But 
  this 
  is 
  false 
  simplicity; 
  it 
  does 
  not 
  really 
  

   work. 
  Thus, 
  to 
  take 
  a 
  clear 
  case, 
  in 
  the 
  higher 
  reaches 
  of 
  

   animal 
  behaviour, 
  most 
  biologists 
  admit 
  the 
  necessity 
  of 
  

   invoking 
  other 
  than 
  mechanical 
  factors. 
  

  

  The 
  second 
  hopeful 
  sign 
  we 
  have 
  already 
  referred 
  to, 
  the 
  

   frank 
  recognition 
  on 
  the 
  part 
  of 
  science 
  that 
  it 
  is 
  not 
  its 
  

   role 
  to 
  solve 
  the 
  riddles 
  of 
  'the 
  universe. 
  It 
  remains 
  more 
  

   or 
  less 
  open 
  to 
  students 
  of 
  science 
  to 
  deny 
  the 
  feasibility 
  

   of 
  any 
  solution 
  and 
  to 
  doubt 
  the 
  value 
  of 
  any 
  generalisations 
  

  

  