﻿Chemistry 
  and 
  Physics, 
  161 
  

  

  Ozoraolybdic 
  acid, 
  H.MoO^ 
  . 
  (H^O)^ 
  {x 
  = 
  1^ 
  ?) 
  was 
  obtained 
  by 
  

   digesting 
  molybdic 
  oxide 
  with 
  a 
  25 
  per 
  cent 
  solution 
  of 
  hydrogen 
  

   peroxide, 
  finally 
  on 
  the 
  water 
  bath, 
  filtering 
  and 
  concentrating 
  

   the 
  filtrate 
  under 
  reduced 
  pressure. 
  It 
  is 
  amorphous, 
  and 
  orange- 
  

   red 
  in 
  color 
  ; 
  and 
  besides 
  reducing 
  permanganate, 
  silver 
  oxide 
  

   and 
  hypochlorites, 
  it 
  liberates 
  the 
  halogens 
  from 
  their 
  hydrogen 
  

   compounds. 
  Rubidium 
  and 
  caesium 
  ozomolybdates, 
  prepared 
  

   similarly, 
  are 
  described. 
  They 
  are 
  crystallized 
  and 
  vary 
  in 
  color 
  

   from 
  yellow 
  through 
  yellowish 
  red 
  to 
  orange-red. 
  — 
  JBer. 
  Berl. 
  

   Chem. 
  Ges., 
  xxxi, 
  1836-1844, 
  July, 
  1898. 
  G. 
  r. 
  b. 
  

  

  4. 
  Oti 
  the 
  Action 
  of 
  Charcoal 
  in 
  the 
  Purification 
  of 
  Spirit. 
  — 
  

   An 
  exhaustive 
  investigation 
  has 
  been 
  made 
  by 
  Glasenapp 
  as 
  to 
  

   the 
  part 
  which 
  charcoal 
  plays 
  in 
  the 
  purification 
  of 
  spirit. 
  From 
  

   the 
  results 
  obtained 
  it 
  appears 
  that 
  charcoal 
  does 
  not 
  absorb 
  fusel 
  

   oil 
  but 
  acts 
  chemically 
  through 
  the 
  oxygen 
  condensed 
  in 
  its 
  pores. 
  

   The 
  lusel 
  oil 
  is 
  oxidized 
  to 
  ketones 
  and 
  aldehydes 
  and 
  the 
  latter 
  

   partly 
  to 
  acids, 
  which 
  then 
  to 
  some 
  extent 
  act 
  on 
  the 
  alcohols 
  

   forming 
  esters 
  with 
  them, 
  these 
  various 
  products 
  giv^ing 
  a 
  charac- 
  

   teristic 
  odor 
  and 
  taste. 
  Since 
  these 
  bodies 
  are 
  soluble 
  in 
  chloro- 
  

   form, 
  they 
  would, 
  unless 
  previously 
  removed, 
  be 
  counted 
  as 
  fusel 
  

   oil 
  in 
  applying 
  Rose's 
  well 
  known 
  process 
  of 
  analysis. 
  Charcoal 
  

   itself 
  absorbs 
  these 
  products 
  to 
  a 
  large 
  extent 
  ; 
  so 
  that 
  in 
  fact 
  

   spirit 
  filtered 
  through 
  it 
  often 
  shows 
  less 
  aldehydes 
  than 
  the 
  

   unfiltered 
  sample. 
  On 
  heating 
  the 
  charcoal 
  afterward 
  to 
  regen- 
  

   erate 
  it, 
  a 
  distillate 
  is 
  obtained 
  which 
  is 
  rich 
  in 
  ethers 
  and 
  alde- 
  

   hydes, 
  though 
  it 
  does 
  not 
  contain 
  more 
  fusel 
  oil 
  than 
  the 
  original 
  

   liquor. 
  The 
  author 
  advises 
  thoroughly 
  impregnating 
  the 
  char- 
  

   coal 
  with 
  oxygen 
  by 
  heating 
  the 
  regenerated 
  material 
  in 
  a 
  current 
  

   of 
  dry 
  air. 
  He 
  suggests 
  that 
  by 
  filtering 
  at 
  a 
  somewhat 
  higher 
  

   temperature, 
  a 
  better 
  product 
  might 
  be 
  obtained. 
  — 
  Zeitschr. 
  angw. 
  

   Chem., 
  617-621, 
  1898; 
  J. 
  Chem. 
  Soc, 
  Ixxiv, 
  616, 
  December, 
  

   1898. 
  G. 
  F. 
  B. 
  

  

  5. 
  0>i 
  the 
  Constitution 
  of 
  the 
  Simjylest 
  Proteids. 
  — 
  According 
  

   to 
  the 
  earlier 
  experiments 
  of 
  Kossel, 
  the 
  molecule 
  of 
  the 
  com- 
  

   plicated 
  proteids 
  contains 
  an 
  atom-complex 
  similar 
  to 
  the 
  prota- 
  

   mine 
  group. 
  Hence 
  more 
  accurate 
  chemical 
  knowledge 
  of 
  the 
  

   protamines 
  should 
  give 
  us 
  an 
  insight 
  into 
  the 
  constitution 
  of 
  the 
  

   albumin 
  molecule. 
  The 
  author 
  has 
  therefore 
  studied 
  more 
  care- 
  

   fully 
  the 
  three 
  following 
  protamines 
  : 
  Sturine 
  from 
  the 
  sperma- 
  

   tozoa 
  of 
  the 
  sturgeon, 
  salmine 
  from 
  that 
  of 
  the 
  salmon, 
  and 
  

   clupeine 
  from 
  herring 
  sperm. 
  The 
  protamine 
  sulphates 
  were 
  pre- 
  

   pared 
  according 
  to 
  a 
  method 
  already 
  described, 
  and 
  freed 
  from 
  

   the 
  last 
  traces 
  of 
  nucleic 
  acid. 
  On 
  adding 
  alcohol 
  to 
  the 
  evapor- 
  

   ated 
  solution, 
  the 
  protamine 
  sulphate 
  separates. 
  Clupeine 
  sul- 
  

   phate 
  dried 
  at 
  110°-120° 
  has 
  the 
  formula 
  C3„H,,Nj^O^(H2SOJ,. 
  

   It 
  is 
  a 
  white 
  powder, 
  easily 
  soluble 
  in 
  warm 
  water. 
  On 
  cooling 
  

   the 
  solution 
  a 
  colorless 
  highly 
  refractive 
  oil 
  separates, 
  which 
  like 
  

   the 
  clupeine 
  sulphate 
  itself 
  is 
  lievo-rotatory. 
  Clupeine 
  has 
  a 
  strongly 
  

   alkaline 
  reaction. 
  Salmine 
  sulphate 
  probably 
  has 
  the 
  formula 
  

   Cg^HggNj.O.(H.,SOJ,, 
  and 
  diff'ers 
  from 
  clupeine 
  sulphate 
  only 
  in 
  

  

  