﻿50 
  

  

  Mr. 
  R. 
  F. 
  D'Arcy 
  on 
  the 
  

  

  

  

  

  

  

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  1 
  

  

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  T^ 
  

  

  

  

  

  

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  /£ 
  

  

  

  

  ! 
  (fine)) 
  

  

  TIME 
  OF 
  DAY 
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  J 
  

  

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  30 
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  Of 
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  Appendix. 
  

  

  O/i 
  £/ie 
  Decomposition 
  of 
  Hydrogen 
  Peroxide 
  by 
  Light. 
  

  

  The 
  following 
  is 
  a 
  brief 
  record 
  of 
  experiments 
  made 
  on 
  this 
  

   subject. 
  In 
  those 
  made 
  between 
  April 
  1 
  and 
  June 
  20, 
  the 
  

   H 
  2 
  2 
  solutions 
  were 
  in 
  open 
  dishes 
  ; 
  the 
  conditions 
  of 
  the 
  

   solutions 
  exposed 
  to 
  sunshine 
  being 
  much 
  the 
  same 
  as 
  in 
  the 
  

   electrical 
  experiments. 
  The 
  inability 
  of 
  the 
  author 
  to 
  find 
  

   any 
  account 
  of 
  this 
  decomposition 
  led 
  him 
  to 
  make 
  the 
  flask 
  

   and 
  other 
  experiments 
  recorded. 
  The 
  instability 
  of 
  H 
  2 
  2 
  , 
  

   even 
  in 
  dilute 
  solutions, 
  when 
  exposed 
  to 
  light 
  would 
  seem 
  

   to 
  be 
  a 
  property 
  which 
  should 
  always 
  be 
  considered 
  in 
  any 
  

   experiments 
  with 
  it. 
  

  

  