ON  SULPHATE  OP  ANILIN. 
295 
Bromide  of  Lithium. 
Take  of  Carbonate  of  Lithia,    112  parts. 
Bromine,  240  " 
Iron  in  filings,  112  " 
Water,  q.  s. 
Bromide  of  Calcium. 
Take  of  Precipitated  Carbonate  of  Lime,     200  part?. 
Bromine,  240  " 
Iron  in  filings,  112  « 
Water,  a  sufficient  quantity. 
New  York,  June  9,  1862. 
ON  SULPHATE  OF  ANILIN. 
By  William  Procter,  Jr. 
The  attention  which  has  of  late  been  given  to  the  new  dyes 
from  coal  tar  products  has  developed  much  information  on  the 
subject  of  anilin,  but  the  great  pecuniary  value  which  is  placed 
on  this  information,  in  view  of  its  use  in  the  production  of  dyes, 
has  prevented  much  of  it  from  reaching  the  journals.  At  the 
last  meeting  of  the  British  Association,  Dr.  Turnbull,  of  Liver- 
pool, called  attention  to  the  sulphate  of  anilin  as  a  therapeutic 
agent,  and  his  short  notice  was  transferred  to  page  62  of  tho 
present  volume  of  this  journal.  Having  been  applied  to  for  in- 
formation regarding  this  salt,  the  following  notice  has  been  pre- 
pared with  a  view  of  satisfying  it  in  a  measure. 
In  the  continuations  of  the  elaborate  paper  of  M.  E.  Kopp, 
on  the  preparation  of  artificial  coloring  matters  from  coal  tar, 
published  in  this  journal  for  1861,  will  be  found  his  directions 
for  its  extraction  from  coal  tar,  and  its  artificial  preparation 
from  benzole,  also  a  product  of  coal  tar.  See  this  journal, 
March,  1861,  pages  129  and  131.  The  separation  of  anilin 
from  coal  tar  direct  is  a  very  complex  troublesome  process,  but 
when  derived  from  benzole,  although  a  tedious  process,  requiring 
considerable  skill,  yet  it  is  by  no  means  so  troublesome.  If  the 
benzole  is  nearly  pure,  nitro-benzole  is  easily  produced  by  causing 
small  streams  of  strong  nitric  acid  and  benzole  to  meet  in  a 
funnel  tube  which  passes  through  a  vessel  of  cold  water,  so  as  to 
