﻿290 
  ANNUAL, 
  REPORT 
  SMITHSONIAN 
  INSTITUTION, 
  1922. 
  

  

  and 
  the 
  new. 
  The 
  obvious 
  reply 
  would 
  be 
  that 
  it 
  takes 
  more 
  

   than 
  three 
  foundation 
  stones 
  to 
  prop 
  up 
  a 
  useful 
  structure, 
  and 
  

   that 
  Mendel 
  furnished 
  several 
  examples, 
  most 
  beautifuly 
  cut 
  and 
  

   polished. 
  But 
  there 
  is 
  a 
  deeper 
  truth 
  than 
  this 
  to 
  be 
  emphasized. 
  

   Weismann 
  unquestionably 
  had 
  a 
  breadth 
  of 
  mental 
  vision 
  far 
  ex- 
  

   ceeding 
  that 
  of 
  Mendel. 
  He 
  was 
  a 
  real 
  clairvoj^ant 
  of 
  science, 
  too, 
  

   and 
  not 
  a 
  mere 
  visionary 
  in 
  the 
  cynical 
  modern 
  sense 
  of 
  the 
  word. 
  

   Nor 
  was 
  he 
  above 
  the 
  drudgery 
  of 
  experiment. 
  But 
  he 
  failed 
  to 
  

   have 
  the 
  good 
  luck 
  of 
  initiating 
  a 
  simple 
  method 
  whereby 
  the 
  

   elementary 
  quantitative 
  relationship 
  between 
  hereditary 
  phenomena 
  

   could 
  be 
  tested 
  and 
  retested 
  by 
  those 
  who 
  followed 
  him. 
  This 
  

   fortune 
  fell 
  to 
  Mendel, 
  who, 
  though 
  in 
  a 
  comparative 
  sense 
  a 
  nar- 
  

   row 
  man, 
  was 
  yet 
  able 
  to 
  grasp 
  somewhat 
  of 
  the 
  significance 
  of 
  

   the 
  results 
  obtained, 
  and 
  leave 
  an 
  imperishable 
  monument 
  to 
  his 
  

   name. 
  No 
  one 
  may 
  say 
  he 
  was 
  the 
  greater 
  man, 
  but 
  no 
  one 
  can 
  

   deny 
  he 
  left 
  the 
  more 
  useful 
  work. 
  His 
  results 
  are 
  a 
  satisfaction 
  

   to 
  the 
  rank 
  and 
  file 
  of 
  scientists 
  for 
  just 
  this 
  reason. 
  They 
  leave 
  

   a 
  ray 
  of 
  hope 
  to 
  the 
  plodders 
  with 
  whom 
  most 
  of 
  us 
  trail. 
  

  

  The 
  path 
  opened 
  up 
  by 
  Mendel 
  has 
  joined 
  with 
  the 
  path 
  cleared 
  

   by 
  morphology 
  to 
  produce 
  a 
  road 
  that 
  has 
  extended 
  some 
  distance 
  

   during 
  the 
  past 
  two 
  decades 
  ; 
  but 
  to 
  point 
  out 
  the 
  cairns 
  and 
  avoid 
  

   falling 
  into 
  the 
  pits 
  is 
  not 
  an 
  easy 
  task. 
  The 
  road 
  makers 
  have 
  

   been 
  numerous, 
  and 
  in 
  general, 
  honestly 
  constructive; 
  but 
  in 
  order 
  

   to 
  hold 
  this 
  article 
  within 
  reasonable 
  limits 
  I 
  shall 
  mention 
  few 
  

   names 
  except 
  to 
  pay 
  a 
  just 
  tribute 
  to 
  Morgan 
  as 
  the 
  master 
  crafts- 
  

   man. 
  Nor 
  shall 
  I 
  speak 
  of 
  the 
  attempts 
  at 
  sabotage 
  except 
  to 
  say 
  

   they 
  have 
  become 
  more 
  and 
  more 
  infrequent. 
  I 
  shall 
  merely 
  en- 
  

   deavor 
  to 
  recapitulate 
  the 
  fundamental 
  points 
  as 
  best 
  I 
  may 
  with 
  

   the 
  hope 
  that 
  the 
  effort 
  will 
  not 
  be 
  far 
  afield. 
  At 
  the 
  risk 
  of 
  

   becoming 
  wearisome 
  I 
  want 
  to 
  try 
  to 
  estimate 
  the 
  progress 
  in 
  terms 
  

   of 
  general 
  conclusions 
  rather 
  than 
  to 
  describe 
  a 
  heterogeneous 
  selec- 
  

   tion 
  of 
  ancient 
  heredity 
  puzzles 
  that 
  have 
  yielded 
  to 
  simple 
  

   interpretations. 
  

  

  GENETICS 
  AND 
  EVOLUTION. 
  

  

  First, 
  it 
  must 
  be 
  emphasized 
  that 
  though 
  modern 
  genetics 
  has 
  

   brought 
  about 
  a 
  clearer 
  orientation 
  of 
  the 
  problems 
  of 
  development 
  

   and 
  of 
  evolution, 
  it 
  has 
  been 
  concerned 
  directly 
  with 
  the 
  mechanism 
  

   of 
  heredity. 
  Least 
  progress 
  has 
  been 
  made 
  in 
  connection 
  with 
  

   the 
  problems 
  of 
  ontogeny. 
  But 
  the 
  conception 
  of 
  where 
  the 
  one 
  

   ends 
  and 
  the 
  other 
  begins, 
  in 
  so 
  far 
  as 
  this 
  is 
  possible, 
  has 
  become 
  

   much 
  more 
  definite 
  — 
  at 
  least 
  in 
  this 
  country. 
  It 
  is 
  probable 
  that 
  

   the 
  interesting 
  phenomena 
  recently 
  described 
  by 
  Mr. 
  Bateson 
  where 
  

  

  