Am.  Jour.  Pharm  ) 
April,  1880.  I 
Chemical  Notes. 
Mixtures. — The  following  mixtures  for  rendering  textile  fabrics,  paper, 
straw,  etc.,  fire-proof,  form  the  basis  of  a  recent  English  patent,  issued 
to  Martin  and  Tessier,  in  Paris  : 
No.  I.    Pure  ammonium  sulphat?,         .  .        8'  kilograms 
Carbonate  of  ammonium,  .  .  2*5 
Boracic  acid,  .  .  .3* 
Pure  borax,         .  .  .  I'y 
Starch,         .  .  .  .  2* 
Water,  .  .  .  loo" 
The  articles  are  to  be  dipped  into  the  boiling  solution. 
No.  2,    Boracic  acid,  .  .  .5'  kilograms 
Sal  ammoniac,     .  .  .  15 
Potassium  feldspar,     .  .  .5* 
Gelatin,  ...  1-5 
Flour  paste,  .  .  .  50* 
Water,  .  .  .  loc 
This  is  to  be  applied  to  wood,  theatre  accessories,  etc.,  with  a  brush. 
—  Chemische  Industrie^  Jan.,  1880,  p.  25. 
Separation  of  Fats  and  Resins  from  Soaps. — This  is  effected,  according 
to  J.  WolfF,  by  the  use  of  commercial  anilin,  which,  by  conversion  into 
the  hydrochlorate,  filtration  of  the  aqueous  solution  through  moistened 
filters,  precipitation  with  caustic  soda  and  removal  of  the  salt,  is  freed 
from  any  admixture  of  benzol  or  nitro  benzol.  The  product  so 
obtained  is  distilled,  and  only  the  part  boiling  over  i8o°C.  used.  This 
will  dissolve  fats  and  resins  in  the  cold,  but  will  not  dissolvo  soaps. 
The  mixture  to  be  treated  is  gotten  into  a  finely-divided  condition  and 
then  treated  with  10  to  20  volumes  of  anilin,  while  the  mixture  is 
stirred  and  any  hard  lumps  are  broken.  After  one-half  to  three-quar- 
ters of  an  hour  digestion  on  the  water-bath  it  is  allowed  to  cool  and 
then  filtered.  The  filtrate  is  treated  with  an  excess  of  hydrochloric 
acid  and  then  with  three  to  four  parts  of  water.  The  cold  solution  is 
then  shaken  up  with  ether  and  the  etherial  layer  removed.  This,  on 
evaporation,  leaves  the  fats  and  resins  of  the  original  mixture.  — Ibid.^ 
p.  28. 
Manufacture  of  Carbon  Disulphide. — The  following  interesting  des- 
cription is  of  the  manufacture  of  carbon  disulphide  as  carried  out  on  a 
large  scale  by  M.  Deiss  at  Marseilles,  France.  Four  vertical  fire-clay 
retorts,  r8  meter  in  height  and  0*4  meter  in  diameter,  are  placed 
together  in  an  oven  and  are  filled  with  charcoal.  When  this  has  been 
brought  to  a  glow,  crude  powdered  sulphur  is  introduced  by  means  of 
a  fire-clay  tube  reaching  down  to  beneath  ths  double  bottom  of  the 
