Am'j^y"imarm'}      Gleanings  from  the  German  Journals.  23 
solution  or  in  a  1  to  2  per  cent,  mercuric  chloride  solution. — (Med. 
Ohir.  Edsch.)  Pharm.  Centralhalle,  1888,  572. 
Pure  glycerin  should  conform  to  the  following  tests:  1.  neutrality 
towards  litmus  paper;  2.  complete  volatility  between  150°  and  200°, 
one  drop  heated  on  an  object-glass  over  a  moderate  flame  should  leave 
no  residue  ;  3.  non-reducibility  of  ammoniacal  silver  nitrate,  1  cc.  of 
the  sample  heated  to  the  boiling  point  with  1  cc.  ammonium  hydrate 
and  five  drops  of  silver  nitrate  solution  added  should  not  become  col- 
ored nor  deposit  a  precipitate  within  five  minutes. — E.  Ritsert,  Pharm. 
Ztg.,  1888,  715. 
Cotton-seed  oil  in  olive  oil. — E.  Hirschsohn  discovered  that  a  chloro- 
formic  solution  of  auric  chloride  (1  gm.  in  200  cc.)  gave  on  warm- 
ing with  cotton-seed  oil  an  intense  raspberry-red  color,  while  pure 
olive  oil  with  the  same  reagent  gave  no  reaction.  To  apply  the  test,  3  to 
5cc.  of  the  oil  with  6-10  drops  of  the  auric  chloride  solution  are  placed 
in  a  water-bath  and  heated  to  100°  for  twenty  minutes.  Cotton-seed  oil 
develops  the  color  in  a  few  minutes;  of  other  oils  tested  hemp, 
linseed,  poppy,  almond,  olive,  rape,  turnip,  mustard,  sesamum,  sun- 
flower, peach-kernel  and  grape-seed  oils  gave  no  reaction  ;  peanut  and 
castor  oils  gave  a  slight  deposit  of  metallic  gold  without  imparting  any 
color  to  the  oils.  The  addition  of  20  fo  cotton-seed  oil  to  the  drying 
oils  could  not  be  detected,  while  the  addition  of  10  %  could  be  detect- 
ed in  peanut,  poppy,  turnip,  castor,  olive,  sesamum,  almond  and  sun- 
flower oils.  The  prettiest  tests  were  gotten  with  olive,  sesamum  and 
almond  oils.  Further  experiments  with  olive  oil  proved  that  the  ad- 
dition of  one  per  cent,  of  cotton-seed  oil  could  certainly  be  detected  by 
the  method  given  above.  By  noticing  the  depth  of  color  and  the 
time  required  to  produce  it  approximate  results  can  be  obtained. 
—Pharm.  Ztschr.f.  Russl,  1888,  721. 
Hj  droclilorate  of  Apomorplilne  has  been  extensively  tried  by  Dr. 
Socquart,  of  Brussels,  as  a  remedy  for  certain  kinds  of  cough,  particularly  in 
distressing  and  frequent  hacking,  unattended  with  expectoration,  or  with  ex- 
ceedingly difficult  expectoration.  The  drug  is,  as  a  rule,  well  borne,  although 
a  few  individuals  manifest  a  special  susceptibility  to  its  action,  and  rarely 
nausea,  colic,  and  diarrhea  result  from  its  employment.  The  dose  is  only 
about  one-twentieth  grain,  given  in  water  in  the  twenty-four  hours.  As  the 
solution  rapidly  alters  by  keeping,  it  is  advised  to  prevent  its  decomposition 
by  the  addition  of  a  few  drops  of  hydrochloric  acid,  which  does  not  interfere 
with  the  therapeutic  effects. —  Weekly  Med.  Rev.,  April  28,1888. 
