AmNov.I!'lf93arm•}   Revision  of  the  U.  S.  Pharmacopoeia.  523 
To  the  list  of  preparations  containing  camphor  must  be  added 
Linimentum  Belladonnas,  Linimentum  Sinapis  Compositum  and 
Pulvis  Morphinse  Compositus  and  to  those  of  Cardamom,  Extractum 
Colocynthidis  Compositum,  Tinctura  Gentianae  Composita,  Tinctura 
Rhei  and  Tinctura  Rhei  Dulcis.  These  are  but  samples  of  the 
"sins  of  omission,"  which  appear  all  through  the  book.  In  the 
preparation  of  Cerate  and  Ointment,  benzoinated  lard  should  have 
been  directed  in  place  of  "  lard,"  and  the  same  should  have  been 
adopted  even  in  the  compound  cerates  and  ointments  where  lard  is 
directed. 
Camphor  Cerate  now  contains  10  per  cent.,  instead  of  3  per  cent., 
1880,  of  camphor  liniment,  a  commendable  change. 
Codeine  Sulphate  is  used  extensively  where  it  is  desired  to  give 
that  remedy  in  liquid  form  as  in  bronchial  affections  and  we  are 
surprised  not  to  find  it  introduced. 
The  directions  for  making  Collodion  are  again  changed.  In  the 
Pharmacopoeia  of  1880,  the  pyroxylin  was  directed  to  be  macerated 
in  the  alcohol  for  15  minutes  and  then  the  ether  added.  The  direc- 
tions of  1890  are  to  macerate  for  15  minutes  in  the  ether  and  then 
add  the  alcohol.  Why  not  mix  the  ether  arid  alcohol  and  then 
add  the  pyroxylin  in  portions,  shaking  after  each  addition  ?  This, 
the  method  of  1870,  has  always  yielded  me  the  best  results. 
In  the  formula  for  Confection  of  Senna,  on  p.  99,  it  is  to  be  noted 
that  oil  of  coriander  and  not  fruit  is  directed,  yet,  on  p.  100,  we  are 
told  that  coriander  is  used. 
Creosote  is  now  correctly  described  as  a  mixture  of  phenols  chiefly 
guaiacol  and  cresol,  and  that  from  beech-wood  tar  is  preferred.  The 
specific  gravity  and  tests  for  other  phenols  and  pyrogallic  ethers  are 
the  same  as  adopted  by  the  German  Pharmacopoeia. 
Crocus  should  be  accompanied  by  a  test  for  the  detection  of  solu- 
ble ammonium  salts  which  have  been  used  as  adulterants.  The 
amount  of  ash  stated,  7-5  per  cent.,  is  too  high.  Examinations  of  a 
number  of  samples  have  yielded  the  writer  4-5  to  6  per  cent,  and  in 
all  pure  saffrons  was  non-fusible \  which  should  be  stated  in  the  offi- 
cial test. 
Cubeb  is  notoriously  adulterated  and  the  description  might  have 
been  accompanied  by  some  description  of  the  most  common  of  these 
adulterants  or  some  of  the  color  reactions  proposed. 
What  has  been  before  said  regarding  the  necessity  of  the  Phar- 
