Rapid  Determination  of  Sulphuric  Acid.  343 
scure,  to  all  our  scientific  endeavors,  methods,  instruments,  abil- 
ity and  chemically  reasoning. 
One  of  the  methods  which  is  of  the  greatest  importance  and  in 
practical  use  all  over  the  chemical  world  is  the  sulphur  determination 
by  barium  salts,  the  considerable  time  and  ability  spent  to  perfect 
this  one  method  alone  would  fully  prove  the  correctness  of  the 
statement  above.  In  one  of  the  latest  Chemical  News,  the  prime 
and  most  distinguished  German  chemical  paper  Che  in.  Ztg.,  No.  135, 
FIGI  SHOWS 
of  November  12,  on  page  1201,  we  read  an  article:  again  stating 
that  the  problem  of  the  absolute  precipitation  of  the  sulphuric  acid 
with  barium  salts  is  still  problematic  and  requires  considerable  skill 
and  comparatively  an  absurd  length  of  time  to  obtain  concordant  and 
satisfactory  results. 
I  therefore  with  pleasure  can  state,  that  through  the  aid  of  techni- 
cal progress  we  have  succeeded  and  obtained  a  most  charming  chemi- 
cal device  in  the  form  of  a  porous  clay  crucible  manufactured  by  a 
firm  in  one  of  the  New  England  States,  and  therefore  an  American 
production  of  the  highest  esteem,  and  importance  to  the  chemist. 
