522  Revision  of  the  U.  S.  Pharmacopoeia.  {AmNo^893.arm' 
On  p.  48  we  are  told  that  triple  orange  flower  water,  the 
stronger  orange  flower  water  of  the  Pharmacopoeia  of  1890,  is  the 
same  as  the  "Aqua  Aurantii  Florum,  Pharm.,  1880,"  and  a  formula 
is  given  for  making  "  orange  flower  water  "  by  dilution,  and  from 
this  latter  syrup  of  orange  flower  water  is  directed  to  be  made.  On 
p.  54  the  same  information  is  given  regarding  rose  water,  and  it 
is  to  be  observed,  that  the  rose  water  and  not  the  stronger  rose 
water,  is  stated  to  be  used  in  cold  cream,  whereas  in  the  formula 
p.  440  the  stronger  is  specified.  The  truth  is  that  the  terms 
"triple"  and  "quadruple"  were  applied  by  the  manufacturers  to 
indicate  that  the  products  were  three  and  four  times  the  strength 
of  the  official,  and  it  has  become  the  trade  custom  to  make  the 
pharmacopceial  product  from  these  by  the  necessary  dilution.  As 
orange  flower  water  is  only  used  for  making  the  syrup  and  for 
flavoring  the  stronger  only  should  be  official.  The  stronger  rose 
water,  however,  is  too  strong  to  be  used  undiluted  in  eye  waters, 
injections,  etc.,  and  so  rose  water  should  be  retained,  but  the  stronger 
rose  water  should  be  directed  for  the  pharmacopceial  preparations. 
Confection  of  Rose  should  be  given  as  a  preparation  containing 
stronger  rose  water,  likewise,  as  mentioned,  Ointment  of  Rose 
Water. 
Silver  Cyanide  should  be  omitted ;  provided,  the  formula  for  the 
extemporaneous  preparation  of  diluted  hydrocyanic  acid  be  like- 
wise dropped. 
The  Subcarbonate  and  Subnitrate  of  Bismuth  are  now  recognized 
as  of  varying  composition  and  consequently  chemical  formulas  are 
omitted.  Bettendorff's  arsenic  test  is  directed  in  place  of  the  Fleit- 
mann's  test  of  1880,  to  prove  the  absence  or  limit  allowable  of  that 
element. 
Calamus  is,  as  in  1880,  unpeeled.  How  many  druggists  have  the 
official  ? 
Calx  Chlorata  is  required  to  contain  not  less  than  35  per  cent,  of 
available  chlorine  instead  of  25  per  cent,  as  heretofore,  and  this  is 
in  accordance  with  what  can  now  be  obtained  in  the  best  commer- 
cial article.  Calx  Sulphurata  is  now  made  by  calcining  a  mixture 
of  dried  calcium  sulphate,  charcoal  and  starch,  and  the  resulting 
product  is  required  to  contain  at  least  60  per  cent,  of  calcium  mono- 
sulphide,  whereas  the  Pharmacopoeia  of  1880  specified  "  not  less 
than  36  per  cent." 
