Am'jJu°i^'i908?rrn'}    Elixirs  of  the  National  Formulary.  339 
Glycerophosphates. — Several  different  makes  of  the  glycerophos- 
phates have  proven  unsatisfactory.  Mr.  Dunning  has  stated  that 
acid  glycerophosphate  of  calcium  is  the  salt  required  in  this  formula. 
A  few  drops  of  phosphoric  acid  will  dissolve  the  precipitate.  Solu- 
tion was  obtained  in  all  cases ;  but  upon  standing,  a  voluminous  white 
precipitate  developed. 
Hypophosphites  with  Iron. — The  elixir  has  deposited  a  slight  pre- 
cipitate. 
Lithium  Salicylate,  and  other  salicylates. — For  a  colorless  prep- 
aration of  these  salts  it  is  essential  that  a  colorless  and  high-grade 
chemical  be  obtained.  When  bought  on  the  open  market,  such  a 
lithium  salicylate  was  not  received,  and  consequently  the  prepara- 
tion is  badly  discolored. 
Malt  and  Iron. — The  wholesale  houses  on  several  occasions  have 
reported  that  they  are  unable  to  supply  extract  of  malt  U.S.P.  for 
making  this  preparation. 
Paraldehyde. — This  elixir  separates  into  two  distinct  layers,  the 
top  layer  occupying  about  one-fourth  of  the  volume.  It  has  become 
discolored  upon  standing  two  months.  It  has  been  suggested  that 
if  the  alcohol  be  increased,  this  separation  will  not  occur.  It  now 
contains  over  50  per  cent,  of  alcohol,  however,  and  is  given  in  a 
two  fluiddrachm  dose,  so  that  its  uses,  especially  if  the  alcohol  is 
yet  further  increased,  are  questionable. 
Phosphorus. — This  was  a  U.S.P.  1890  preparation  and  the  formula 
should  be  in  the  Appendix.  The  only  change  in  the  formula  is  that 
of  directing  560  c.c.  of  glycerin,  the  U.S.P.  1890  ordering  550  c.c. 
Potassium  Acetate  and  Juniper. — A  slight  deposit  forms  upon 
standing. 
Compound  Quinine  and  Phosphates. — Although  a  solution  was  first 
obtained,  a  voluminous  precipitate  soon  formed.  This  elixir  should 
be  further  experimented  with,  if  the  preparation  is  to  be  retained. 
Compound  Blackberry. — As  blackberries  were  not  in  season  and  the 
fresh  juice  was  unobtainable,  this  elixir  could  not  be  made. 
Elixir  Terpin  Hydrate.  - 
Elixir  Terpin  Hydrate  with  Codeine. 
Elixir  Terpin  Hydrate  with  Heroine. 
In  all  of  these  elixirs  a  heavy  crystalline  precipitate  has  formed. 
It  was  first  supposed  to  be  terpin  hydrate;  but  as  its  volume  soon 
exceeded  the  amount  of  that  substance  in  solution,  it  was  suspected 
