GLEANINGS  FROM  AMERICAN  JOURNALS. 
the  St.  Louis  College  of  Pharmacy,  offers  a  formula  for  making 
this  fluid  extract.  It  differs  in  manipulation  from  that  published 
by  the  writer  in  the  Proceedings  of  the  Association  for  1863, 
page  236,  which  is  identical  with  the  officinal  process  for  fluid 
extract  of  dulcamara.  Prof.  Primm's  process  is  as  follows : 
Take  of  Frostwort  leaves,      ...      16  troy  oz. 
Alcohol,  ...      16  fluid  oz. 
Water,  a  sufficient  quantity. 
Sugar,  ...         8  troy  oz. 
Keduce  the  frostwort  to  a  coarse  powder  and  macerate  it  in 
a  covered  vessel  for  eight  hours  with  12  fluidounces  of  the 
alcohol.  Transfer  to  a  suitable  apparatus  for  displacement,  and 
when  the  liquid  has  ceased  to  flow  mix  the  balance  of  the  alcohol 
with  4  fluidounces  of  water  and  gradually  add  them  to  the  mass 
in  the  percolator  until  the  liquid  displaced  measures  12  fluid- 
ounces,  which  liquid  should,  by  aid  of  a  water  bath,  be  reduced 
to  four  fluidounces. 
The  marc  remaining  in  the  percolator  should  then  be  treated 
with  one  pint  of  cold  water  by  maceration  for  twelve  hours,  and 
subjected  to  strong  pressure  until  a  pint  of  liquid  is  obtained, 
which  should  be  evaporated  to  eight  fluidounces,  mixed  with  the 
four  fluidounces  previously  obtained,  and  the  sugar  dissolved  in 
the  mixture  by  agitation. — Humboldt.  Med.  Arch.,  Sept.  1868. 
Camphor  a  preventive  of  oxidation.  Mr.  George  Wellborn, 
according  to  the  Journal  of  Applied  Chemistry,  finds  that  a  small 
lump  of  camphor  placed  in  a  bottle  of  recently  crystallized  pro- 
tosulphate  of  iron  preserves  it  from  oxidation,  the  salt  affording 
a  transparent  solution  after  it  had  been  kept  three  months.  If 
the  odor  of  camphor  acquired  by  the  salt  is  objectionable,  it  may 
be  exposed  awhile  before  using,  or  it  may  be  removed  by  alco- 
holic washing  and  dried. 
Quinine  Fills.  Dr.  Louis  E.  Atkinson  (Med.  and  Surg.  Re- 
porter, Sept.  19,  1868,)  recommends  tartaric  acid  as  a  means  of 
making  quinine  pills,  by  the  following  process,  viz.  : 
Take  of  Sulphate  of  quinia,    ....    20  grains. 
Tartaric  acid,  4  " 
Water,   1  minim. 
