Am.  Jour.  Pharm.  > 
Mar.,  I877.  / 
Cosmo lin  Cream. 
101 
Take  of  Acidum  citricum  (in  moderate  sized  crystals),  . 
Magnesii  sulphas,           .  .              .      ^ss — i 
Syrupus  simplex,       .  .             .  fjiii 
Extractum  limonis,       .   .  .              .  TT\,v 
Pota>sii  bicarb,  (in  crystals),  .              .  gr-*l 
Aqua  pura,  sufficient  for  .  .              .  f^xii 
M.  secundum  artem. 
The  above  formula  is  much  cheaper,  and  contains  in  a  greater  de- 
gree the  required  properties  of  a  good,  mild  laxative  than  does  the 
officinal  solution  of  magnesium  citrate,  and  also  has  a  very  pleasant  flavor, 
the  bitter  taste  of  magnesia  being  entirely  absent. 
It  is  also  a  very  expeditious  and  convenient  manner  of  preparing 
such  a  solution,  and  will,  I  trust,  meet  the  approbation  of  those  who 
have  not  the  time  to  while  away  in  preparing  that  (to  drug  clerks) 
tedious  formula,  sol.  magn.  cit. 
The  following  is  my  method  of  preparing  it  :  Place  acid  and  sal 
Epsom  in  12-oz.  bottle,  then  add  simple  syrup  and  water  and  extract 
of  lemon — lastly,  add  potassium  bicarb.,  and  cork  ready  for  use.  By 
using  the  acid  and  potassium  bicarb,  in  crystals  the  danger  of  gas  escap- 
ing is  obviated,  as  gas  does  not  begin  to  generate  before  the  cork  can 
be  firmly  secured. 
Joseph  Rhinehart, 
Hospital  Steward  U.  S.  A. 
COSMOLIN  CREAM. 
Editor  American  Journal  of  Pharmacy  : 
An  excellent  substitute  for  cold  cream  may  be  obtained  by  the  fol- 
lowing formula  : 
Take  of  Cosmolin,  .  gxxiv 
White  wax,        .  .  ... 
Spermaceti,  ad  5x11 
Glycerin,           ....  f  3  iii 
Oil  of  rose  geranium,  .  .  .  f 
Melt  the  wax  and  spermaceti,  add  the  cosmolin ;  then  stir  until 
nearly  cold  ;  add  the  glycerin  and  oil,  and  continue  to  stir  until  cold. 
E.  J.  Davidson,  Ph.G. 
