PHARMACEUTICAL  NOTICES. 
315 
PHARMACEUTICAL  NOTICES. 
Esteemed  Editor, — I  present  herewith  a  formula  for  Fluid  Ex- 
tract of  Wild  Cherry  and  Iron,  also  one  for  Arsenite  of  Strych- 
nia. The  latter,  though  perhaps  of  but  little  promise,  may  not 
be  devoid  of  interest. 
Arsenite  of  Strychnia  is  formed  by  the  double  elective  affinity 
between  the  arsenite  of  soda  and  hydrochlorate  of  strychnia  in 
solution. 
These  salts,  when  properly  prepared,  do,  by  the  process  of 
double  decomposition,  produce  the  chloride  of  sodium  and  arsen- 
ite of  strychnia,  Stc,  As  03.  The  latter  being  soluble,  may  be 
separated  from  the  solution  of  chloride  of  sodium  by  careful  evapo- 
ration. The  arsenite  will  first  crystallize,  by  reason  of  its  less 
solubility,  in  beautiful  fine  crystals,  when  the  mother  liquor,  con- 
taining chloride  of  sodium,  may  be  decanted  and  the  crystals 
dried  in  folds  of  bibulous  paper. 
Ferrated  Fluid  Extract  of  Wild  Cherry  Bark. 
I  have  prepared  a  Ferrated  Fluid  Extract  of  Wild  Cherry 
Bark,  which  meets  with  high  favor.  I  received  the  suggestion 
from  prescriptions  for  combinations  of  Iron  and  Wild  Cherry  pre- 
parations. Guided  by  your  instructions  for  the  preparation  of 
the  simple  fluid  extract*  I  proceeded  as  follows  : — 
R. — Cortex  Prun.  Virg.  contus.  •  Ixii. 
Amygdalae  Dulc.  .  .  ^ij. 
Ferri  Oxyd.  Hydrat.     •       •  ^ss. 
Sacch.  Albi,       «•  •       •  ixij. 
Ferri  Citratis 
Alcoholis 
Aquae  font.        aa  q.  s. 
I  first  exhaust  the  bark  of  its  tonic  principles  with  the  alco- 
holic menstruum,  and  the  resulting  alcoholic  tincture  I  carefully 
evaporate  to  expel  the  alcohol,  and  then  mix  the  residue  with 
six  ounces  of  water,  and  add  the  hydrated  sesquioxide  of  iron  ; 
allow  it  to  macerate  for  six  hours,  occasionally  agitating,  and 
filter  into  a  bottle  containing  an  emulusion  of  the  almonds, 
*  Amer.  Journ.  Pharmacy,  Jan.  and  March,  1856. 
