256  Philadelphia  College  of  Pharmacy. 
(2)  State  exactly  how  you  would  prepare  the  following  prescription.  Would 
you  dispense  it  as  written  ?    Give  reasons  for  your  mode  of  procedure. 
H    Acidi  Arsenosi  *5 
Potassii  Bicarb.  i" 
Aq.  Destillat.  ioo* 
Ft.  solutio  sec.  art. 
Sig. — Let  4  c.c.  be  given  every  2  hours. 
Operative  Pharmacy. 
(i)  POWDERS. 
R    Hydrarg.  Chlor.  Mit.  .   .  .  .   o'i  Gramme 
Pulv.  Rhei  0-3  " 
Testae  Prep  i*  " 
M.  ft.  Chart.  No.  XII. 
(2)  GRANULAR  EFFERVESCENT  SAI/T. 
Sodium  Phosphate  12*5  Grammes 
Citric  Acid   4*5  " 
Tartaric  Acid  675  " 
Sodium  Bicarbonate  12 "5 
(3)  OINTMENT. 
Mercury   ;  2*5  Grammes 
Nitric  Acid  3-  C.c. 
Nitric  Acid  2.  " 
Lard  Oil   30*  " 
(4)  EMULSION. 
Make  100  c.c.  of  an  emulsion,  by  the  English  method,  which  must  contain 
50  per  cent,  of  Cod  Liver  Oil.  Put  it  in  a  bottle  and  write  on  the  label  the 
quantities  of  each  ingredient  used. 
(5)  SUPPOSITORIES. 
Extract  of  Stramonium   -50  Gramme 
Tannic  Acid   '50  " 
Oil  of  Theobroma  6*  Grammes 
Make  six  suppositories  by  rolling. 
ANALYTICAL  CHEMISTRY. 
(1)  Describe  the  gravimetric  and  volumetric  estimations  of  iron  in  Ferrous 
Sulphate.    What  are  the  advantages  of  the  latter  method  ? 
(2)  (a)  Give  the  formula  of  the  precipitate  obtained  in  the  quantitative 
determination  of  aluminum  and  state  the  change  occurring  during  ignition. 
(6)  How  much  "  Alumen  "  will  be  equivalent  to  0*153  of  this  ignited  substance  ? 
(3)  {a)  Why  is  it  necessary,  in  the  gasometric  estimation  of  Hydrogen 
Dioxide,  to  make  a  correction  for  temperature  before  calculating  percentage  ? 
{b)  If  a  sample  of  Hydrogen  Dioxide  yields  11  volumes  of  oxygen  at  200  C, 
what  is  its  percentage  strength  ? 
