﻿552 
  Mutations 
  

  

  were 
  repeated 
  in 
  this 
  third 
  generation 
  (1895). 
  

   I 
  was 
  sure 
  to 
  get 
  nearly 
  all 
  of 
  them, 
  without 
  any 
  

   important 
  exceptions, 
  as 
  I 
  now 
  knew 
  how 
  to 
  de- 
  

   tect 
  them 
  at 
  almost 
  any 
  age. 
  In 
  fact, 
  I 
  found 
  

   many 
  of 
  them; 
  as 
  many 
  as 
  60 
  nanella 
  and 
  73 
  

   lata, 
  or 
  nearly 
  .5$ 
  of 
  each. 
  Rubrinervis 
  also 
  

   recurred, 
  and 
  was 
  seen 
  in 
  8 
  specimens. 
  It 
  

   was 
  much 
  more 
  rare 
  than 
  the 
  two 
  first-named 
  

   types. 
  

  

  But 
  the 
  most 
  curious 
  fact 
  in 
  that 
  year 
  was 
  

   the 
  appearance 
  of 
  oblonga. 
  No 
  doubt 
  I 
  had 
  

   often 
  seen 
  it 
  in 
  former 
  years, 
  but 
  had 
  not 
  at- 
  

   tached 
  any 
  value 
  to 
  the 
  very 
  slight 
  differences 
  

   from 
  the 
  type, 
  as 
  they 
  then 
  seemed 
  to 
  me. 
  I 
  

   knew 
  now 
  that 
  any 
  divergence 
  was 
  to 
  be 
  es- 
  

   teemed 
  as 
  important, 
  and 
  should 
  be 
  isolated 
  for 
  

   further 
  observation. 
  This 
  showed 
  that 
  among 
  

   the 
  selected 
  specimens 
  not 
  less 
  than 
  176, 
  or 
  more 
  

   than 
  \% 
  belonged 
  to 
  the 
  oblonga 
  type. 
  This 
  

   type 
  was 
  at 
  that 
  time 
  quite 
  new 
  to 
  me, 
  and 
  it 
  had 
  

   to 
  be 
  kept 
  through 
  the 
  winter, 
  to 
  obtain 
  stems 
  

   and 
  flowers. 
  It 
  proved 
  to 
  be 
  as 
  uniform 
  as 
  its 
  

   three 
  predecessors, 
  and 
  especially 
  as 
  sharply 
  

   contrasted 
  with 
  lamarckiana. 
  The 
  opportuni- 
  

   ty 
  for 
  the 
  discovery 
  of 
  any 
  intermediates 
  was 
  as 
  

   favorable 
  as 
  could 
  be, 
  because 
  the 
  distinguish- 
  

   ing 
  marks 
  were 
  hardly 
  beyond 
  doubt 
  at 
  the 
  time 
  

   of 
  the 
  selection 
  and 
  removal 
  of 
  the 
  young 
  plants. 
  

   But 
  no 
  connecting 
  links 
  were 
  found. 
  

  

  