10  formulas  in  Local  Use.  {^jfH;^ 
minutes  ;  in  64  ounces  of  water,  in  four  minutes  ;  in  80  ounces  of 
water,  in  seven  minutes  ;  in  160  ounces  of  water  is  found  the  limit  of 
distinct  reaction — the  blue  shade  can  be  seen  before  the  color  is  dis- 
solved from  the  paper. 
In  making  the  above  experiments  the  paper  was  submerged  in  the 
liquid. 
Philadelphia,  December,  1871. 
FORMULAS  IN  LOCAL  USE. 
By  Louis  S.  Cohen. 
Believing  it  to  be  the  duty  of  every  conscientious  pharmacist  to 
contribute,  through  the  Pharmaceutical  Journals,  to  the  profession 
whatever  improvements  he  may  be  able  to  make,  be  they  ever  so 
trifling,  I  cannot  approve  of  the  practice  of  some  in  our  ranks  who 
make  certain  preparations,  bestowing  on  them,  with  quite  an  air  of 
authority,  officinal  titles,  and  still  regard  them  as  proprietary  special- 
ties in  claiming  superiority  for  their  formulas,  without  giving  the 
profession  the  benefit  thereof.  Some  pharmacists  have  endeavored 
to  publish  all  their  observations  that  may  be  useful  to  others  ;  yet 
they  are  "  few  and  far  between."  By  following  such  examples,  our 
science  and  art  would  more  readily  be  raised  to  a  far  higher  stand- 
ard than  it  now  occupies,  and  would  be  far  more  respected  by  the 
public  at  large. 
In  the  following  I  offer  a  few  contributions  of  local  formulas, 
trusting  they  may  be  welcome  to  some  readers  of  the  American 
Journal  of  Pharmacy. 
Mixtura  Rhei  et  Sodce. 
fy.   Pulv.  Rhei, 
Sodae  Bicarbonat.  aa  3ij, 
Aquae  Menth.  pip.     giv.  Mix. 
This,  though  often  prescribed  in  this  city,  can  only  be  prepared  by 
the  "  initiated,"  because  the  formula  has  been  kept  secret. 
Potio  Riveri. 
Ify.    Potass.  Carb.  depur.  3j, 
Acid.  Citrici  grs.  lij, 
Aquse  §ij.  Mix. 
This  preparation  corresponds  rather  closely  to  our  "  neutral  mix- 
ture," and  it  is  often  prescribed  under  the  above  title  by  German 
