440  Comparison  of  Galenical  Preparations.  {^^kllT'isss^^' 
It  is  the  author's  opinion  that  the  present  base  for  citrine  ointment, 
lard  oil,  though  not  being  perfect  in  all  respects,  has  the  fewest  objec- 
tionable features,  and  that  its  adoption  is  a  decided  step  toward  per- 
fection. 
COMPAKISON  OF  GALENICAL  PREPARATIONS  OF  THE 
UNITED  STATES  AND  GERMAN  PHARMACOPOEIAS. 
By  the  Editor. 
(Continued  from  page  401.) 
Ferri  Carbonas  saccharatus,  U.  S.  Ferrum  carbonicum  sacchara- 
tum,  P.  G. — The  first  part  of  the  process  directing  the  decomposition 
of  the  ferrous  sulphate  is  identical  in  relative  proportions  and  manipu- 
lation except  that  the  German  Pharmacopoeia  directs  the  solution  of 
ferrous  sulphate  to  be  filtered  directly  into  the  clear  solution  of  sodium 
bicarbonate,  contained  in  a  capacious  bottle.  The  ferrous  carbonate 
from  10  parts  of  the  sulphate  is  mixed  with  16  parts  of  sugar,  U.  S.^ 
with  2  parts  of  milk  sugar  and  6  parts  of  sugar,  dried  and  sufficient 
sugar  added  to  make  20  parts,  P.  G.  The  result  is  in  both  cases 
practically  alike.  The  powder  contains  not  less  than  15  per  cent,  of 
ferrous  carbonate,  U.S.  ;  it  contains  10  per  cent,  of  iron,  P.  G. 
Ferri  Oxidum  hydratum  mm  Magnesia,  U.  8.  Antidotum  Arsenici, 
P.  G. — Solution  of  ferric  sulphate  sp.  gr,  1*320,  65  gm.,  water  130 
gm.,  magnesia  10  gm.,  water  1,000  gm.  U.  S. — Solution  of  ferric 
sulphate  sp.  gr.  1'429,  100  parts,  water  250  parts;  magnesia  15  parts, 
water  250  parts.  P.  G. — When  mixed,  the  first  preparation  is  con- 
siderably more  diluted  and  contains  a  somewhat  larger  amount  of  free 
magnesia  than  the  second  preparation. 
Glyceritum  Amyli,  U.  8  Unguentum  Glycerini,  P.  G. — Starch  10 
parts,  glycerin  90  parts ;  heat  to  140°C.  until  a  translucent  jelly  is 
formed.  U.  8. — Rub  powdered  tragacanth  1  part  with  alcohol  5  parts, 
then  with  glycerin  50  parts  and  heat  by  means  of  a  steam-bath  until  a 
uniform  translucent  mass  is  formed.    P.  G. 
Infusa,  U.  8.,  P.  G. — Substance  1  part,  boiling  water  10  parts;  let 
stand  two  hours  and  strain.  U.  8. — Substance  1  part,  hot  distilled 
water  10  parts  ;  keep  for  five  minutes  in  a  vapor-bath  of  boiling  water, 
let  cool  and  strain.    P.  G. 
Infusum  8enn(E  compositum,  U.  8.,  P.  G. — Senna  6  parts,  manna  12 
parts,  magnesium  sulphate  12  parts,  fennel  2  parts,  boiling  water  100 
parts ;  when  cool  strain  ;  the  product  weighs  100  parts.   U.  8. — Senna 
