﻿358 
  OF 
  THE 
  REACTION 
  OF 
  THE 
  ESSENTIAL 
  OILS 
  

  

  less 
  associated 
  with 
  the 
  sulphurous 
  acid, 
  which 
  has 
  long 
  been 
  known 
  as 
  

   an 
  antiseptic. 
  

  

  In 
  cutaneous 
  diseases, 
  and, 
  perhaps, 
  in 
  the 
  case 
  of 
  some 
  ulcers, 
  the 
  

   employment 
  of 
  the 
  sulphurous 
  sulphated 
  oils 
  may 
  be 
  advantageous. 
  

  

  A 
  respectable 
  physician 
  was 
  of 
  opinion 
  that 
  the 
  sulphurous 
  sulphate 
  

   of 
  turpentine 
  had 
  a 
  beneficial 
  influence 
  in 
  the 
  case 
  of 
  an 
  obstinate 
  

   tetter. 
  ♦ 
  

  

  Possibly 
  the 
  presence 
  of 
  sulphurous 
  acid 
  may 
  increase 
  the 
  power 
  of 
  

   oil 
  of 
  turpentine 
  as 
  an 
  anthelmintic. 
  

  

  Pieces 
  of 
  corned 
  meat 
  hung 
  up, 
  after 
  being 
  bathed 
  with 
  an 
  alcoholic 
  

   solution 
  of 
  the 
  sulphurous 
  sulphated 
  oil 
  of 
  turpentine, 
  or 
  with 
  solutions 
  

   of 
  the 
  sulphated 
  oils 
  of 
  cloves 
  or 
  cinnamon, 
  remained 
  free 
  from 
  putri- 
  

   dity 
  at 
  the 
  end 
  of 
  several 
  months. 
  That 
  imbued 
  with 
  cinnamon 
  had 
  

   a 
  slight 
  odour 
  and 
  taste 
  of 
  the 
  oil. 
  

  

  I 
  am 
  led, 
  therefore, 
  to 
  the 
  impression 
  that 
  the 
  antiseptic 
  power 
  is 
  

   not 
  peculiar 
  to 
  kreosote, 
  but 
  belongs 
  to 
  other 
  acrid 
  oils 
  and 
  principles, 
  

   and 
  especially 
  to 
  the 
  oils 
  of 
  cinnamon 
  and 
  cloves. 
  

  

  The 
  union 
  of 
  sulphuric 
  acid 
  with 
  these 
  oils 
  appears 
  to 
  render 
  

   them 
  more 
  soluble 
  in 
  water: 
  whether 
  any 
  important 
  change 
  is 
  effected 
  

   in 
  their 
  medical 
  qualities 
  by 
  the 
  presence 
  of 
  the 
  acid 
  may 
  be 
  a 
  ques- 
  

   tion 
  worthy 
  of 
  attention. 
  

  

  I 
  have 
  stated 
  my 
  reasons 
  for 
  considering 
  the 
  ammoniacal 
  liquid, 
  

   resulting 
  from 
  the 
  ablution 
  of 
  the 
  ethereal 
  sulphurous 
  sulphate 
  of 
  

   etherine 
  with 
  ammonia, 
  as 
  partially 
  composed 
  of 
  hyposulphurie 
  acid. 
  

   By 
  adding 
  to 
  this 
  ammoniacal 
  liquid 
  a 
  quantity 
  of 
  sulphuric 
  acid, 
  suffi- 
  

   cient 
  to 
  produce 
  a 
  strong 
  odour 
  of 
  sulphurous 
  acid, 
  and 
  then 
  a 
  portion 
  

   of 
  any 
  of 
  the 
  essential 
  oils; 
  a 
  combination 
  ensued, 
  as 
  already 
  described, 
  

   between 
  the 
  oils 
  and 
  the 
  sulphurous 
  acid 
  liberated 
  by 
  the 
  sulphuric 
  

   acid, 
  so 
  as 
  to 
  render 
  them 
  yellow 
  and 
  suffocating. 
  The 
  habitudes 
  of 
  

   cinnamon 
  oil 
  from 
  cassia 
  under 
  these 
  circumstances 
  were 
  peculiar. 
  A 
  

   quantity 
  of 
  it 
  was 
  dissolved, 
  communicating 
  to 
  the 
  liquid 
  a 
  reddish 
  hue. 
  

   The 
  solution 
  being 
  evaporated, 
  a 
  gummy 
  translucent 
  reddish 
  mass 
  was 
  

   obtained, 
  which, 
  by 
  solution 
  in 
  alcohol, 
  precipitated 
  a 
  quantity 
  of 
  salt, 
  

   and 
  being 
  boiled 
  nearly 
  to 
  dryness, 
  re-dissolved 
  in 
  water, 
  and 
  again 
  

   evaporated, 
  was 
  resolved 
  into 
  a 
  mass 
  having 
  the 
  friability, 
  consistency 
  

   and 
  translucency 
  of 
  common 
  rosin 
  ; 
  but 
  with 
  a 
  higher 
  and 
  more 
  lively 
  

  

  