466  Abstracts  from  the  French  Journals.  {Am^!;^Im- 
ABSTRACTS  FROM  THE  FRENCH  JOURNALS. 
Translated  for  The  American  Journal  of  Pharmacy. 
Ozone  as  a  therapeutic  agent. —  In  a  paper  read  recently  before  the 
French  Society  of  Electrotherap)',  Drs.  Larat  and  Gautier  prove  that 
the  clinical  results  observed  from  ozone  as  a  therapeutic  agent  are  far 
from  being  constant  and  are  even  in  contradiction  with  the  physio- 
logical experiences. — Rev.  Internat.  de  Bibl.  Med.,  July  25,  1892. 
Decomposition  of  sulphurous  acid  by  charcoal. — Berthelot  has 
shown  that  at  a  red  heat  the  reaction  of  the  two  bodies  results  in 
the  production  of  carbonic  oxide,  carbon  oxysulphide  and  carbon 
disulphide.  Scheurer-Kestner  [Compt.  rend.,  cxiv,  296)  ascertained 
that  at  a  white  heat  the  reaction  proceeds  according  to  the  equation 
2S02-f  3C=2CO-^C02+2S. 
Anhydrous  crystallized  sulphates  have  been  prepared  by  P.  Klobb 
{Compt.  rend.,  cxiv,  836)  by  mixing  the  metallic  sulphate  with 
excess  of  ammonium  sulphate,  and  heating  the  mixture  in  a  partly 
covered  crucible  until  the  latter  salt  has  been  completely  expelled, 
but  not  increasing  the  heat  to  the  decomposition  of  the  former.  In 
this  manner  ZnS04  has  been  prepared  in  colorless  octahedra  ; 
CuS04  in  gray  needles;  CoSOA  in  purplish  red,  and  NiS04  in  yel- 
lowish green  octahedra. 
Preparation  of  pure  strontium  salts. — Barthe  and  Falieres  suggest 
[Bull.  Soc.  Chun.,  3  ser.,  vii,  104)  the  following  process:  Dissolve 
strontianite  or  strontium  sulphide  in  dilute  hydrochloric  acid, 
precipitate  Fe  and  Al  by  ammonia,  add  excess  of  sulphuric  acid, 
wash  the  precipitate  by  decantation  until  Ca  has  been  completely 
removed,  pour  upon  the  precipitate  excess  of  ammonium  carbonate 
solution,  agitate  occasionally  during  two  days,  and  then  thoroughly 
wash  the  mixed  strontium  and  barium  sulphates  and  carbonates ; 
treat  this  residue  with  dilute  hydrochloric  acid,  filter  after  24  hours, 
add  to  each  liter  of  liquid  200  gm.  sulphuric  acid,  spec.  grav.  1-17, 
dip  est  for  several  hours  with  2  or  3  gm.  of  freshly  precipitated 
strontium  sulphate,  which  will  be  dissolved  by  the  strongly  acid 
liquid  and  precipitate  any  barium  still  in  solution;  then  filter, 
evaporate  to  dryness,  again  dissolve  in  water  and  crystallize.  Thus 
prepared  the  salt  shows  only  the  lines  of  strontium  in  the  spectro- 
scope. 
Chloride  of  gold  and  sodium  is  recommended  by  Dr.  Boubila  as  a 
