14      Galenical  Preparations  of  the      P.  Additions.  {AmjinU,ris9i.arm' 
(or  100  parts);  Salicylic  Acid,  y2  grain  (or  \y2  parts);  Distilled 
Water  sufficient  to  produce  6  fl.  drachms  (or  1,000  fluid  parts). 
Boil  the  water,  add  the  salicylic  acid,  and  then  the  hydrochlorate  of 
cocaine ;  cool,  and  add  water,  if  necessary,  to  produce  the  required 
volume. 
Liquor  Morphines  sulphatis. — Morphine  Sulphate  35  grains  (or  1 
part);  Rectified  Spirit  2  fl.  oz.  (or  25  fl.  parts);  Distilled  Water 
sufficient  to  produce  8  ounces  (or  100  fl.  parts).  Dissolve. 
Liquor  Trinitrince-. — Pure  Nitroglycerin  1  part  by  weight ;  Recti- 
fied Spirit  sufficient  to  produce  100  fl.  parts.  Dissolve. 
Magnesii  Sulphas  effervescens. — Magnesium  Sulphate,  in  crystals, 
IOO  parts;  Sodium  Bicarbonate  72  parts;  Tartaric  Acid  38  parts; 
Citric  Acid  25  parts;  Refined  Sugar  21  parts.  The  final  product 
should  weigh  about  200  parts.  Dry  the  magnesium  sulphate  at 
about  1300  F.  (54-4°  C.)  until  it  has  lost  nearly  one-fourth  (23  per 
cent.)  of  its  weight ;  powder  the  product,  mix  with  the  sugar  and 
then  with  the  other  ingredients,  all  in  powder ;  heat  the  mixture  to 
between  2000  and  2200  F.  (93-3°  and  104-4°  C),  and  when  the  par- 
ticles begin  to  aggregate,  stir  them  assiduously  until  they  assume  a 
granular  form;  then  by  means  of  suitable  sieves,  separate  the 
granules  of  uniform  and  most  convenient  size,  and  preserve  the 
preparation  in  well-closed  bottles. 
Mistura  Olei  Ricini. — Castor  Oil  6  fl.  drachms  ;  Oil  of  Lemon  10 
minims ;  Oil  of  Cloves  2  minims  ;  Syrup  I  ^  fl.  drachm ;  Solution 
of  Potash  1  fl.  drachm ;  Orangeflower  Water  sufficient  to  produce  2 
fl.  ounces.  Mix  the  oils  in  a  mortar;  then  incorporate  one-third  of 
the  potash  solution,  afterwards  the  syrup,  then  an  additional  third 
of  the  potash  solution,  then  gradually,  half  of  the  water,  the 
remainder  of  the  potash  solution  and  lastly,  sufficient  of  the  orange- 
flower  water. 
Pilula  Ferri. — Ferrous  sulphate  60  gr. ;  Potassium  Carbonate  36 
gr. ;  Refined  Sugar,  in  powder,  12  gr. ;  Tragacanth,  in  powder,  4 
gr. ;  Glycerin  2^/2  minims;  Distilled  Water,  sufficient.  Reduce  the 
ferrous  salt  to  fine  powder  in  a  mortar,  add  the  sugar  and  traga- 
canth, and  mix  intimately;  finely  powder  the  potassium  salt  in 
another  mortar  and  incorporate  it  with  the  glycerin ;  transfer  this 
mixture  to  the  mortar  containing  the  iron  mixture,  beat  thoroughly 
