\ 
174  British  Pharmaceutical  Codex.        { Am a p7if;  imirn 
stances  as  menthol,  pepsin,  santonin,  the  insoluble  salts  of  bismuth 
and  a  number  of  the  alkaloids. 
Pkenolphthalein  Lozenges. — Trochisci  phenolphthaleini,  B.P  C,  are 
also  directed  to  be  made  with  chocolate  paste  and  represent  approxi- 
mately 2  grains  each  of  phenolphthalein. 
Lozenge  Base. — The  article  on  lozenges  is  a  comprehensive  one 
and  should  be  worth  many  times  the  price  of  the  book  to  any  up- 
to-date  pharmacist.  Cut  lozenges  constitute  a  class  of  preparations 
that  is  much  neglected  and  deserves  to  be  brought  to  the  attention 
of  physicians.  The  Codex  contains  modified  formulas  for  the  official 
British  bases,  the  more  useful  of  which  are  : 
LOZENGES  WITH  FRUIT  BASIS. 
Refined  sugar   •  88 
Gum  acacia,  in  powder  4 
Mucilage  of  acacia  7 
Black  currant  paste  11 
Distilled  water,  a  sufficient  quantity. 
Mix  and  divide  into  100  lozenges. 
LOZENGES  WITH  TOLU  BASIS. 
Refined  sugar   96 
Tincture  of  tolu  2  c.c. 
Gum  acacia,  in  powder   4 
Mucilage  of  acacia  '   7 
Distilled  water,  a  sufficient  quantity. 
Mix  and  divide  into  100  lozenges. 
Compressed  Tablets. — The  directions  for  making  compressed  tab- 
lets are  particularly  well  adapted  to  the  production  of  these  articles 
on  a  small  scale.  The  vehicles  used  for  granulating  the  several  sub- 
stances are  those  suggested  by  White  and  Robinson  in  a  paper  read 
at  the  meeting  of  the  British  Pharmaceutical  Conference  some  five 
years  ago. 
While  these  substances  are  undoubtedly  useful  for  many  of  the 
possible  combinations  of  drugs,  and  have  the  added  advantage  that 
the  granulations  are  readily  dried  by  exposure  at  ordinary  tempera- 
tures, they  should  not  be  relied  on  too  implicitly,  particularly  for 
tablets  that  are  to  retain  a  purely  white  color. 
For  extracts  and  mixtures  containing  extracts,  the  more  prefer- 
able is : 
ETHEREAL  SOLUTION  OF  THEOBROMA. 
Oil  of  tbeobroma   16-5 
Ether,  sufficient  to  produce  100. 
