﻿Organisms 
  and 
  Nucleic 
  Acid 
  Derivatives 
  on 
  Plant 
  Growth. 
  89 
  

  

  Table 
  II 
  — 
  continued. 
  

  

  Series. 
  

  

  

  1st 
  

  

  2nd 
  

  

  3rd 
  

  

  4th 
  

  

  5th 
  

  

  6th 
  

  

  No. 
  

  

  week. 
  

  

  week. 
  

  

  week. 
  

  

  week. 
  

  

  week. 
  

  

  week. 
  

  

  "IT 
  

   V 
  . 
  

  

  Defcmer's 
  Solution 
  

  

  r 
  

  

  i 
  

  

  21 
  

  

  52 
  

  

  356 
  

  

  1,504 
  

  

  6,912 
  

  

  44,032 
  

  

  299,008 
  

  

  + 
  

  

  22 
  

  

  50 
  

  

  344 
  

  

  1,680 
  

  

  7,936 
  

  

  40,448 
  

  

  277,504 
  

  

  Crude 
  Nucleic 
  Acid 
  

  

  i 
  

   i 
  

  

  23 
  

  

  55 
  

  

  344 
  

  

  1,520 
  

  

  6,912 
  

  

  40,960 
  

  

  274,432 
  

  

  Derivatives 
  

  

  24 
  

  

  45 
  

  

  320 
  

  

  1,472 
  

  

  7,232 
  

  

  44,544 
  

  

  323,072 
  

  

  + 
  Azotobacter 
  

  

  i 
  

  

  25 
  

  

  52 
  

  

  360 
  

  

  1,712 
  

  

  6,592 
  

  

  37,888 
  

  

  291,840 
  

  

  

  

  — 
  

  

  50-8 
  

  

  344-8 
  

  

  1,577 
  -6 
  

  

  7,116-8 
  

  

  41,574 
  -4 
  

  

  293,171 
  -2 
  

  

  VI. 
  

  

  

  

  

  

  

  

  

  

  

  r 
  

  

  26 
  

  

  50 
  

  

  324 
  

  

  1,536 
  

  

  9,088 
  

  

  47,104 
  

  

  311,808 
  

  

  Defcmer's 
  Solution 
  

  

  27 
  

  

  50 
  

  

  344 
  

  

  1,552 
  

  

  8,256 
  

  

  37,376 
  

  

  253,952 
  

  

  + 
  

  

  

  28 
  

  

  55 
  

  

  372 
  

  

  1,856 
  

  

  8,128 
  

  

  41,472 
  

  

  302,592 
  

  

  Bacterised 
  Peat 
  

  

  1 
  

  

  29 
  

  

  46 
  

  

  364 
  

  

  1,728 
  

  

  8,448 
  

  

  41,472 
  

  

  294,912 
  

  

  

  i 
  

  

  30 
  

  

  50 
  

  

  336 
  

  

  1,296 
  

  

  7,552 
  

  

  38,400 
  

  

  301,056 
  

  

  

  

  

  50 
  -2 
  

  

  348 
  -0 
  

  

  1,593 
  -6 
  

  

  8,294 
  -4 
  

  

  41,i64-8 
  

  

  292,864 
  -0 
  

  

  From 
  the 
  second 
  week 
  onwards, 
  when 
  the 
  plants 
  were 
  halved 
  or 
  quartered 
  

   at 
  the 
  weekly 
  countings, 
  the 
  discarded 
  fractions 
  from 
  the 
  five 
  dishes 
  in 
  each 
  

   series 
  were 
  added 
  together 
  and 
  thoroughly 
  washed, 
  in 
  order 
  that 
  an 
  estima- 
  

   tion 
  of 
  the 
  dry 
  weights 
  of 
  the 
  plants 
  could 
  be 
  made. 
  From 
  the 
  data 
  thus 
  

   obtained 
  a 
  calculation 
  was 
  made 
  of 
  the 
  dry 
  weight 
  of 
  100 
  plants 
  in 
  each 
  

   series 
  week 
  by 
  week, 
  and 
  a 
  comparison 
  of 
  these 
  weekly 
  weights 
  with 
  the 
  

   original 
  weight 
  of 
  the 
  plants 
  is 
  shown 
  in 
  the 
  Table 
  below 
  : 
  — 
  

  

  Table 
  III. 
  

  

  

  

  Weight 
  of 
  100 
  plants 
  in 
  milligrams. 
  

  

  

  

  

  

  

  

  

  

  Series 
  No. 
  

  

  

  

  

  

  

  

  

  At 
  beginning. 
  

  

  2nd 
  week. 
  

  

  3rd 
  week. 
  

  

  4th 
  week. 
  

  

  5th 
  week. 
  

  

  6th 
  week. 
  

  

  I 
  

  

  16 
  -4 
  

  

  16-7 
  

  

  11 
  -o 
  

  

  9-6 
  

  

  4 
  9 
  

  

  4-7 
  

  

  II 
  

  

  16-4 
  

  

  19-3 
  

  

  18 
  -7 
  

  

  20-1 
  

  

  18-1 
  

  

  18 
  -6 
  

  

  III 
  

  

  16-4 
  

  

  19 
  "3 
  

  

  18 
  -4 
  

  

  17 
  -9 
  

  

  18 
  "8 
  

  

  17 
  -7 
  

  

  IV 
  

  

  16 
  -4 
  

  

  19-1 
  

  

  18-1 
  

  

  18 
  -9 
  

  

  19 
  -9 
  

  

  18-7 
  

  

  V 
  

  

  16 
  -4 
  

  

  18 
  6 
  

  

  18-3 
  

  

  20-7 
  

  

  17 
  -9 
  

  

  19 
  -8 
  

  

  VI 
  

  

  16-4 
  

  

  19 
  -6 
  

  

  18-6 
  

  

  17 
  -1 
  

  

  20-0 
  

  

  19-7 
  

  

  The 
  slight 
  fluctuation 
  shown 
  in 
  the 
  weights 
  of 
  the 
  plants 
  in 
  some 
  series 
  

   week 
  by 
  week, 
  instead 
  of 
  a 
  steady 
  rise 
  or 
  fall, 
  is 
  explained 
  by 
  the 
  irregular 
  

   size 
  of 
  the 
  small 
  plants 
  formed 
  during 
  the 
  rapid 
  multiplication 
  of 
  the 
  large 
  

  

  