﻿THE 
  PLANT 
  AS 
  A 
  WORKING 
  MACHINE 
  19 
  

  

  it, 
  we 
  must 
  now 
  consider 
  in 
  greater 
  detail 
  the 
  special 
  features 
  

   of 
  each 
  part 
  as 
  these 
  are 
  shown 
  by 
  more 
  careful 
  study 
  of 
  their 
  

   structures 
  and 
  work. 
  Succeeding 
  chapters 
  will 
  deal 
  with 
  these 
  

   matters, 
  but 
  to 
  see 
  clearly 
  the 
  significance 
  of 
  special 
  struc- 
  

   tures 
  and 
  functions 
  this 
  unit 
  outline 
  of 
  the 
  whole 
  plant 
  and 
  its 
  

   work 
  should 
  be 
  kept 
  constantly 
  in 
  mind. 
  The 
  student 
  can 
  

   come 
  to 
  an 
  understanding 
  of 
  the 
  life 
  of 
  the 
  plant 
  only 
  by 
  

   observing 
  how 
  its 
  organs 
  cooperate 
  in 
  the 
  processes 
  of 
  nutri- 
  

   tion, 
  growth, 
  and 
  reproduction. 
  It 
  has 
  been 
  the 
  purpose 
  of 
  this 
  

   chapter 
  to 
  give 
  an 
  outline 
  of 
  the 
  whole 
  plant 
  ; 
  to 
  raise 
  ques- 
  

   tions 
  concerning 
  what 
  a 
  plant 
  is 
  and 
  how 
  it 
  works 
  ; 
  and 
  to 
  

   suggest, 
  in 
  a 
  general 
  way, 
  the 
  answers 
  to 
  these 
  questions. 
  

   Such 
  a 
  general 
  view 
  of 
  the 
  nature 
  of 
  a 
  plant 
  furnishes 
  the 
  

   best 
  basis 
  for 
  further 
  study. 
  

  

  