92  Abstracts  from  the  French  Journals.     | AmFeb.?i89oarm* 
Yvon  cites  the  principal  mixtures  now  in  use  for  the  adminis- 
tration of  chloral.  As  a  Hypnotic  :  Chloral,  2  to  5  gm. ; 
bromide  of  sodium,  1  to  3  gm. ;  syrup  of  codeine  and  syrup 
of  laurocerasus,  aa.  15  to  20  gm.  ;  water,  100  gm.  For 
Cardiac  Dyspncea  (See):  Chloral,  2  to  4  gm. ;  potassium 
iodide,  1*25  gm.  to  2  gm. ;  mucilage,  120  gm. ;  a  tablespoonful 
every  hour.  Enema  for  Convulsions  :  Musk,  20  cgm. ;  cam- 
phor, 1  gm. ;  chloral,  50  cgm.  to  1*50  gm. ;  yelk  of  egg,  No.  1  ; 
water,  100  gm.  For  Suppositories:  Chloral,  1  gm. ;  cacao 
butter,  3  gm. ;  ext.  hyoscyamus,  1  to  2  cgm. 
Incompatibility  of  Antipyrine  with  Naphthol. — M. 
Chabrol  [Bull.  com.  Nov.),  having  received  a  prescription  for. 
napthol  [i  and  antipyrine,  aa  10  cgm.,  with  salicylate  of 
bismuth,  25  cgm.,  for  1  cachet,  to  make  eight  in  all,  found 
that  his  mixture  turned  at  once  to  a  damp  paste.  He  mixed 
the  ingredients  in  several  ways,  but  the  result  was  always 
the  same.  He  finally  obviated  the  difficulty  by  first  mixing  the 
antipyrine  with  five  times  its  weight  of  sugar.  He  expresses 
the  opinion  that  physicians  would  perhaps  do  well  to  be 
cautious  about  prescribing  combinations  of  new  drugs  whose 
reactions  are  as  yet  imperfectly  understood,  but  which  are 
liable,  as  in  this  instance,  to  give  rise  to  chemical  compounds 
which  may  prove  injurious  or  dangerous. 
Preparation  of  Soluble  Tar. — The  object  is  to  get  solu- 
bility in  water  for  vegetable  tar  and  all  of  its  components. 
Saline  waters  do  not  dissolve  tar,  either  pure  or  combined 
with  an  alkali.  But  tar,  when  saponified  was  very  soluble  in 
distilled  water  after  elimination  of  the  excess  of  alkali.  Fol- 
lowing this  indication,  the  following  formula  was  devised, 
quite  different  from  those  thus  far  published.  Take  of  Landes 
tar  (from  Pinus  maritima),  1,000  gm.;  dry  soda,  140  gm.;  water, 
800  gm.  The  soda,  in  solution,  is  poured  over  the  tar,  stir- 
ring, and  left  in  contact  for  two  hours.  Another  mixture  is 
made  as  follows  :  Water,  9  kil.  200  gm.;  marine  salt,  2  kil.  500 
gm.;  crys.  carb.  soda,  1  kil.  250  gm.  The  salts  are  dissolved 
in  boiling  water  and  to  this  is  added  the  first  solution.  After 
5  minutes  of  stirring  the  fire  is  drawn.  In  a  few  days  the 
mother  liquors  separate  and  the  tar  is  run  off  and  washed 
with  its  weight  of  water  by  decantation.    The  liquors,  if 
