Am.  Jonr.  Phariii. 
April,  1908. 
British  Pharmaceutical  Codex, 
175 
THEOBROMA  EMULSION. 
Oil  of  theobroma  25*00 
Hard  soap  3*00 
Tragacanth,  in  powder  0*50 
Benzoic  acid  0  25 
Distilled  water,  to  produce  100. 
Dissolve  the  soap  in  25  of  the  water  by  the  aid  of  heat,  add  the 
hot  solution  to  the  oil  of  theobroma,  previously  melted,  and  mix  by 
agitation,  then  shake  in  the  tras^acanth,  add  the  benzoic  acid  and 
make  up  to  100  with  distilled  water. 
Where  the  presence  of  soap  is  considered  undesirable,  15  of  gum 
acacia  may  be  substituted  for  the  soap. 
Pastilles. — These  are  directed  to  be  made  with  a  basis  of  glyco- 
gelatin,  with  which,  when  melted  on  a  water-bath,  the  active  medic 
inal  agent  is  incorporated,  either  in  solution  or  suspension.  The 
melted  mixture  is  then  directed  to  be  poured  into  moulds  or  into  a 
suitable  tray,  allowed  to  solidify,  and  then  cut  into  the  required 
number  of  pastilles. 
Glyco%elatin. — The  formula  for  glycogelatin,  B.P.C.,  the  basis  for 
pastilles,  is  as  follows  : 
Gelatin  12*00 
Glycerin  .  .     40*00 
Distilled  water  2o'oo 
Orange-flower  water  20*00 
Sugar  5  00 
Citric  acid    2  00 
Oil  of  lemon   o'io 
Solution  of  caramel,  a  sufficient  quantity. 
Concentrated  Waters. — Aquae  concentrata,  B.P.C.  The  directions 
of  the  British  Pharmacopoeia  for  medicated  waters  involve  the  dis- 
tillation of  the  product  from  the  crude  drugs.  Concentrated  waters 
have  evidently  been  included  in  the  Codex  to  provide  for  a  ready 
method  of  extemporaneous  preparation.  They  are  described  as 
being  solutions  of  volatile  oils  iq  alcohol,  or  mixtures  of  alcohol 
and  water,  and  are  designed  for  the  extemporaneous  'production  of 
medicated  waters.  Ten  formulas  are  included,  and  these  are  so  de_ 
signed  that  one  part  of  the  product  is  the  equivalent  of  about  40 
parts  of  the  official  medicated  water.  The  resulting  medicated 
waters  are  directed  to  be  clarified  by  the  intervention  of  calcium 
phosphate.    Apart  from  being  a  matter  of  interest,  this  particular 
