﻿Commissioner 
  of 
  Agriculture. 
  539 
  

  

  The 
  Initial 
  Temperature 
  of 
  Two 
  Cows 
  — 
  Continued. 
  

  

  No. 
  319 
  No. 
  318. 
  

  

  Temp. 
  

  

  5 
  i>. 
  M 
  103.3 
  

  

  6 
  " 
  103.1 
  

  

  7 
  " 
  102.2 
  

  

  8 
  " 
  103.0 
  

  

  9 
  " 
  103.1 
  

  

  10 
  " 
  102.5 
  

  

  11 
  " 
  102.5 
  

  

  12 
  midnight 
  102.4 
  

  

  1 
  A. 
  M 
  101.8 
  

  

  2 
  " 
  102.0 
  

  

  3 
  " 
  102.0 
  

  

  4 
  " 
  102.2 
  

  

  5 
  " 
  101.6 
  

  

  6 
  " 
  101.8 
  

  

  8 
  " 
  102.5 
  

  

  With 
  a 
  knowledge 
  of 
  these 
  normal 
  variations, 
  which 
  often 
  ex- 
  

   ceed 
  the 
  tuberculin 
  reaction, 
  it 
  is 
  obvious 
  that 
  before 
  applying 
  

   the 
  test 
  the 
  normal 
  temperature 
  of 
  the 
  animals 
  should 
  be 
  approxi- 
  

   mately 
  determined, 
  and 
  when 
  they 
  are 
  being 
  subjected 
  to 
  the 
  test 
  

   they 
  should 
  be 
  cautiously 
  protected, 
  otherwise 
  the 
  comparatively 
  

   slight 
  elevation 
  necessary 
  to 
  detect 
  the 
  disease 
  may 
  be 
  disguised. 
  

  

  As 
  the 
  reaction 
  seems 
  to 
  be 
  the 
  result 
  of 
  an 
  affinity 
  existing 
  

   between 
  tuberculin 
  and 
  a 
  living 
  tuberculous 
  lesion, 
  it 
  is 
  natural 
  

   to 
  suppose 
  that 
  when 
  the 
  two 
  are 
  brought 
  together 
  in 
  the 
  same 
  

   animal 
  it 
  would 
  invariably 
  take 
  place. 
  Experience 
  has 
  shown 
  

   that 
  it 
  almost 
  always 
  does. 
  It 
  is 
  important, 
  however, 
  that 
  we 
  

   understand 
  as 
  far 
  as 
  possible 
  the 
  reason 
  for 
  the 
  exceptions 
  and 
  the 
  

   extent 
  to 
  which 
  they 
  occur. 
  Exceptions 
  or 
  errors 
  in 
  the 
  tuber- 
  

   culin 
  test 
  fall 
  into 
  two 
  classes, 
  viz. 
  (1) 
  where 
  there 
  is 
  a 
  reaction 
  

   and 
  no 
  disease 
  is 
  found, 
  and 
  (2) 
  where 
  there 
  is 
  no 
  reaction 
  and 
  

   the 
  disease 
  exists. 
  

  

  In 
  explaining 
  the 
  first 
  of 
  these 
  alleged 
  errors 
  the 
  records 
  of 
  the 
  

   cases 
  which 
  have 
  come 
  to 
  my 
  attention 
  have 
  been 
  so 
  deficient 
  in 
  

  

  