﻿70 
  Scientific 
  Intelligence. 
  

  

  agrees 
  with 
  the 
  analysis 
  of 
  the 
  residue 
  obtained 
  on 
  decomposing^ 
  

   the 
  substance 
  with 
  hot 
  water, 
  the 
  author 
  proposes 
  the 
  formula 
  

   (Ag 
  2 
  0) 
  3 
  5 
  AgN0 
  3 
  . 
  — 
  Zeitschr. 
  anorg. 
  Chemie, 
  xii, 
  89-97, 
  Feb., 
  1896. 
  

   Mulder 
  and 
  Heringa 
  have 
  also 
  examined 
  this 
  substance, 
  pre- 
  

   paring 
  it 
  by 
  substantially 
  the 
  same 
  process. 
  The 
  cathode 
  was 
  a 
  

   liter 
  reservoir 
  of 
  platinum 
  and 
  the 
  anode 
  was 
  a 
  platinum 
  wire, 
  a 
  

   small 
  glass 
  vessel 
  placed 
  beneath 
  serving 
  to 
  collect 
  the 
  black 
  

   compound 
  as 
  it 
  iorrned. 
  In 
  one 
  series 
  of 
  experiments 
  the 
  solution 
  

   was 
  maintained 
  neutral 
  by 
  means 
  of 
  silver 
  carbonate, 
  and 
  in 
  the 
  

   other 
  it 
  was 
  not 
  neutralized. 
  According 
  to 
  these 
  authors, 
  the 
  sub- 
  

   stance 
  obtained 
  is 
  liable 
  to 
  spontaneously 
  decompose 
  at 
  the 
  ordi- 
  

   nary 
  temperature, 
  evolving 
  oxygen. 
  The 
  analysis 
  of 
  the 
  black 
  

   compound 
  obtained 
  from 
  concentrated 
  solutions 
  points 
  to 
  the 
  

   composition 
  (Ag 
  2 
  0) 
  3 
  O.AgN0 
  3 
  ; 
  or 
  perhaps 
  (Ag 
  3 
  4 
  ) 
  2 
  AgN0 
  3 
  or 
  

   (Ag 
  2 
  2 
  ) 
  3 
  AgN0 
  6 
  .— 
  Rev". 
  Trav. 
  Chim., 
  xv, 
  1-51, 
  1896; 
  J. 
  C/iem. 
  

   jSoc, 
  lxx, 
  ii, 
  561, 
  October, 
  1896. 
  G. 
  f. 
  b. 
  

  

  6. 
  On 
  a 
  new 
  Hydrocarbon, 
  C 
  14 
  H 
  12 
  . 
  — 
  By 
  dropping 
  benzyl-ethyl 
  

   ether 
  into 
  a 
  flask 
  provided 
  with 
  a 
  return 
  condenser 
  and 
  contain- 
  

   ing 
  a 
  mixture 
  of 
  phosphoric 
  oxide 
  and 
  benzene, 
  Schickler 
  has 
  

   obtained 
  a 
  new 
  hydrocarbon. 
  At 
  first 
  the 
  mixture 
  is 
  heated 
  on 
  

   the 
  water-bath, 
  but 
  afterward, 
  as 
  the 
  reaction 
  becomes 
  active, 
  it 
  is 
  

   cooled. 
  Ethylene 
  is 
  evolved 
  and 
  the 
  liquid 
  shows 
  blue 
  fluores- 
  

   cence. 
  On 
  distilling 
  off 
  the 
  benzene 
  and 
  iractioning 
  the 
  residue, 
  

   a 
  clear, 
  colorless 
  aromatic 
  liquid 
  is 
  obtained 
  which 
  can 
  be 
  crys- 
  

   tallized 
  by 
  cooling, 
  thus 
  forming 
  thick 
  hard 
  prisms, 
  having 
  the 
  

   formula 
  C 
  14 
  H 
  10 
  and 
  giving 
  an 
  odor 
  like 
  that 
  of 
  benzyl-ethyl 
  ether. 
  

   It 
  fuses 
  at 
  27°-28°, 
  boils 
  at 
  253°-254°, 
  and 
  is 
  soluble 
  in 
  all 
  the 
  

   usual 
  solvents, 
  these 
  solutions 
  showing 
  no 
  fluorescence. 
  It 
  yields 
  

   three 
  nitro-compounds, 
  two 
  of 
  which 
  are 
  crystalline 
  and 
  appear 
  to- 
  

   be 
  di-nitro 
  derivatives 
  fusing 
  at 
  181° 
  and 
  108° 
  respectively, 
  while 
  

   the 
  third 
  melts 
  at 
  75° 
  and 
  does 
  not 
  crystallize. 
  It 
  is 
  dissolved 
  

   and 
  sulphonated 
  by 
  strong 
  sulphuric 
  acid. 
  — 
  J. 
  pr. 
  Chem., 
  II, 
  liii, 
  

   369-374, 
  May, 
  1896. 
  g. 
  f. 
  b. 
  

  

  7. 
  On 
  Fractional 
  Distillation 
  of 
  acids 
  of 
  the 
  Acetic 
  series. 
  — 
  

   Sorel 
  has 
  applied 
  to 
  mixtures 
  of 
  the 
  first 
  four 
  acids 
  of 
  the 
  acetic 
  

   series 
  with 
  water, 
  the 
  method 
  of 
  fractional 
  distillation 
  used 
  by 
  

   him 
  with 
  aqueous 
  alcohol, 
  the 
  composition 
  of 
  the 
  vapor 
  at 
  each 
  

   instant 
  being 
  calculated 
  from 
  the 
  curve 
  representing 
  the 
  varia- 
  

   tions 
  in 
  the 
  composition 
  of 
  t.he 
  liquid 
  in 
  the 
  retort. 
  He 
  finds 
  that 
  

   in 
  dilute 
  solutions 
  the 
  proportion 
  of 
  acid 
  in 
  the 
  vapor 
  is 
  higher 
  the 
  

   greater 
  the 
  molecular 
  mass 
  of 
  the 
  acid. 
  When 
  the 
  concentration 
  

   increases 
  the 
  reverse 
  is 
  the 
  case, 
  the 
  proportion 
  being 
  lower 
  the 
  

   greater 
  the 
  molecular 
  mass. 
  Hence 
  mixtures 
  of 
  propionic 
  or 
  

   butyric 
  acid 
  and 
  of 
  water, 
  of 
  a 
  certain 
  composition 
  distil 
  unchanged 
  

   as 
  if 
  they 
  were 
  definite 
  hydrates. 
  Moreover, 
  butyric 
  acid 
  shows 
  

   a 
  peculiar 
  phenomenon 
  in 
  that 
  with 
  any 
  proportion 
  of 
  acid 
  

   between 
  24 
  to 
  34 
  per 
  cent, 
  the 
  composition 
  of 
  the 
  distillate 
  is 
  

   independent 
  of 
  the 
  composition 
  of 
  the 
  liquid 
  in 
  the 
  retort 
  ; 
  its 
  

   behavior 
  being 
  intermediate 
  between 
  that 
  ol 
  miscible 
  liquids 
  and 
  

   liquids 
  which 
  are 
  partially 
  or 
  completely 
  insoluble 
  in 
  one 
  another. 
  

   — 
  G. 
  B., 
  cxxii, 
  946-948, 
  April, 
  1896. 
  g. 
  f. 
  b. 
  

  

  