An>De°cU!'i87h8arm  }  Gleanings  from  the  German  Journals.  575 
ointment  of  the  Pharmacopoeia.  As  it  contains  no  water,  it  is  pro- 
posed to  name  it  Unguentum  Rosce.     The  following  is  the  formula  : 
R     Ol.  amygd.  dul.,               ....  ^ix 
Cetacei,      .....  ,^iss 
Cerae  albae,        ,              .              .  . 
Ol.  rosae,    .....  grs.  vii 
Melt  together,  over  a  gentle  heat,  the  oil,  spermaceti  and  wax,  and 
when  it  commences  to  cool  add  the  oil  of  rose,  and  constantly  stir 
ynril  cold. 
GLEANINGS  FROM  THE  GERMAN  JOURNALS. 
By  Louis  von  Cotzhausen,  Ph.G. 
Determination  of  the  Presence  of  Iodine  and  Chlorine  in 
Bromine. — Ernst  Biltz  suggests  the  following  tests  : 
1.  For  Iodine. — Dissolve  the  bromine  in  40  times  its  bulk  of  water, 
macerate  the  greater  portion  of  this  bromine  water  with  powdered  iron, 
allow  to  settle,  decant,  add  solution  of  starch  to  the  decanted  liquid, 
and  then  add  a  few  drops  of  bromine  water  \  the  presence  of  iodide  of 
iron  will  then  be  indicated  by  the  immediate  formation  of  a  blue  layer 
of  iodide  of  starch  beneath  the  upper  yellow  liquid.  The  author 
claims  that  this  test  will  yield  a  reaction  if  the  bromine  contains  ^  per 
cent,  of  iodine. 
2.  — The  test  for  chlorine  is  that  proposed  by  Duflos,  who  treats  the 
bromine  with  ammonia  water  (thus  forming  bromide  of  ammonium), 
digests  this  solution  with  barium  carbonate,  filters,  evaporates  to  dry- 
ness, heats  to  redness,  and  treats  the  residue  with  absolute  alcohol, 
which  will  not  dissolve  chloride  of  barium. — Pharm.  Centralh.,  Sept. 
19,  1878,  p.  354. 
Presence  of  Phosphoric  Acid  in  so-called  C.  P.  Hydrochloric 
Acid. — E.  Holdermann  strongly  recommends  the  testing  of  all  chem- 
icals and  preparations  purchased,  stating  that  a  chemical  analysis  of 
acidum  hydrochloricum  purum,  obtained  from  one  of  the  largest  chem- 
ical laboratories  proved  it  to  consist  of  89*25  per  cent,  of  officinal 
(Ph.  Germ.)  phosphoric  and  10*75  per  cent,  of  officinal  hydrochloric 
acid  ;  both  acids  had  probably  been  mixed  accidentally. — Arch.  d. 
Pharm.,  Aug.,  1878,  p.  101. 
