Am.  Jour.  Pharm.) 
November,  1907.  j 
Nascent  Ferrous  Carbonate. 
525 
To  the  powdered  soap,  in  a  clean,  dry  mortar,  add  the  castor  oil 
and  the  spirit  of  peppermint,  mix  well  and  gradually  add,  with  con- 
stant stirring,  the  solution  of  saccharin  and  enough  water  to  make 
100  c.c. 
The  resulting  mixture  is  a  white,  limpid  emulsion  that  separates 
partially  on  long  standing,  but  will  readily  mix  again  on  shaking. 
For  an  extemporaneous  preparation  a  solution  of  soap,  such  as 
that  for  which  a  formula  was  published  on  page  415  of  this  Journal 
for  October,  1 907,  will  be  found  to  be  preferable. 
The  procedure  for  making  an  emulsion  with  liquid  soap  would  be 
about  as  follows  : 
To  50  c.c.  of  castor  oil  and  3  c.c.  of  spirit  of  peppermint,  in  a 
suitable  bottle,  add  5  c.c.  of  liquid  soap,  mix  thoroughly  by  shaking, 
and  add  the  solution  of  saccharin  and  enough  water  to  make  100  c.c. 
The  solution  of  saccharin  may.  of  course,  be  replaced  by  an  equiva- 
lent quantity  of  syrup. 
NASCENT  FERROUS  CARBONATE. 
Bv  M.  I.  Wilbert. 
A  formula  for  a  solution  of  ferrous  carbonate  was  given  in  this 
Journal  some  time  ago  (September,  1907).  Since  that  time  a  pro- 
prietary preparation  has  been  brought  to  my  attention  that  appears 
to  offer  some  advantages  and  is  certainly  more  palatable  than  the 
solution  referred  to  above. 
In  this  preparation,  that  is  claimed  to  be  the  result  of  extensive 
studies  and  costly  experiments,  aavantage  is  taken  of  the  solvent 
and  inhibiting  properties  of  glycerin. 
A  preparation  having  all  of  the  properties  of  the  proprietary 
article  may  be  made  by  dissolving  the  requisite  amount  of  granu- 
lated ferrous  sulphate  in  water,  diluting  with  glycerin  and  adding 
to  this  solution  a  solution  of  the  requisite  amount  of  potassium 
carbonate  in  the  remaining  portion  of  glycerin. 
A  detailed  formula  would  be  as  follows  : 
Ferrous  sulphate  4   3  2  c.c. 
Distilled  water   1-5  c.c. 
Potassium  carbonate     i'6  gramme?. 
Glycerin,  to  make   ioo'o  c.c. 
Each  5  c.c.  of  the  resulting  solution  would  represent  the  equivalent 
of  one  pill  of  ferrous  carbonate. 
