﻿8 
  Mixter 
  — 
  Products 
  of 
  the 
  Explosion 
  of 
  Acetylene. 
  

  

  tained 
  in 
  TJ-tubes 
  was 
  due 
  to 
  differences 
  in 
  the 
  way 
  the 
  sparks 
  

   started 
  the 
  decomposition. 
  The 
  acetylene 
  in 
  the 
  residual 
  gas 
  in 
  

   the 
  experiments 
  in 
  the 
  tubes 
  when 
  the 
  explosions 
  were 
  violent 
  

   was 
  either 
  a 
  portion 
  that 
  escaped 
  decomposition 
  because 
  of 
  the 
  

   cooling 
  at 
  the 
  sides 
  of 
  the 
  tubes, 
  or 
  it 
  was 
  formed 
  from 
  carbon 
  

   and 
  hydrogen 
  at 
  high 
  temperatures. 
  The 
  experiments 
  with 
  

   the 
  bomb 
  were 
  more 
  satisfactory 
  as 
  regards 
  uniformity 
  of 
  

   results 
  than 
  those 
  made 
  in 
  the 
  smaller 
  pieces 
  of 
  apparatus. 
  

   The 
  escape 
  of 
  gas 
  at 
  the 
  time 
  of 
  an 
  explosion 
  in 
  the 
  bomb 
  did 
  

   not 
  increase 
  the 
  amount 
  of 
  acetylene 
  left. 
  Perhaps 
  the 
  expan- 
  

   sion 
  was 
  not 
  sufficiently 
  rapid. 
  The 
  presence 
  of 
  acetylene 
  to 
  the 
  

   extent 
  of 
  4 
  to 
  6 
  per 
  cent 
  in 
  the 
  gaseous 
  product 
  of 
  explosions 
  

   in 
  the 
  bomb 
  must 
  be 
  regarded 
  either 
  as 
  a 
  part 
  of 
  the 
  original 
  

   gas 
  which 
  escaped 
  decomposition, 
  or 
  it 
  was 
  acetylene 
  formed 
  

   synthetically. 
  It 
  hardly 
  seems 
  probable 
  that 
  any 
  gas 
  at 
  the 
  

   time 
  of 
  the 
  explosion 
  remained 
  below 
  the 
  temperature 
  requi- 
  

   site 
  for 
  decomposition 
  when 
  the 
  mean 
  temperature 
  was 
  far 
  

   higher 
  and 
  at 
  the 
  surface 
  of 
  a 
  glass 
  insulator 
  was 
  sufficient 
  to 
  

   crack 
  it 
  ; 
  moreover, 
  the 
  carbon 
  separated 
  remains 
  incandescent 
  

   for 
  a 
  perceptible 
  time 
  and 
  must 
  effect 
  decomposition. 
  It 
  would 
  

   seem 
  then 
  that 
  the 
  acetylene 
  in 
  the 
  residual 
  gas 
  is 
  not 
  part 
  of 
  

   the 
  original 
  gas 
  but 
  is 
  formed 
  from 
  carbon 
  and 
  hydrogen 
  

   after 
  the 
  explosion 
  when 
  the 
  carbon 
  is 
  either 
  in 
  the 
  gaseous 
  

   state 
  or 
  exists 
  in 
  molecules 
  containing 
  but 
  few 
  atoms 
  and 
  capa- 
  

   ble 
  of 
  uniting 
  with 
  the 
  hydrogen. 
  This 
  view 
  is 
  supported 
  by 
  

   the 
  fact 
  that 
  acetylene 
  is 
  formed 
  in 
  the 
  voltaic 
  arc. 
  The 
  proof 
  

   given 
  of 
  the 
  formation 
  of 
  an 
  endothermic 
  compound 
  of 
  nitro- 
  

   gen 
  and 
  carbon, 
  not 
  originally 
  in 
  the 
  apparatus, 
  also 
  affords 
  a 
  

   strong 
  support 
  to 
  this 
  view 
  of 
  the 
  production 
  of 
  acetylene 
  by 
  

   synthesis. 
  

  

  It 
  is 
  the 
  intention 
  of 
  the 
  writer 
  to 
  continue 
  the 
  work 
  with 
  

   acetylene 
  under 
  different 
  pressures 
  than 
  three 
  atmospheres, 
  

   and 
  to 
  make 
  experiments 
  with 
  mixtures 
  of 
  acetylene 
  and 
  

   nitrogen. 
  

  

  