374  Powder  Folders.  {^dlZi^m' 
No.  i  .  •  95'857 
No.  2  91*376 
No.  3  .     .  .  .  .  ...  .  .  .  .  ,  .  .  . '.  .  :  .  .  .....  .65-932 
The  difference  between  the  two  will  give  the  "  ester  number :  " 
No.  1    76-646 
No.  2  72  873 
No.  3  47*623 
Dividing  the  ester  number  by  the  acid  number,  we  obtain  the 
proportional  number,  which,  in  these  cases,  is, 
No.  1  399 
No.  2  .  :  373 
No.  3  '  ,  ....  2*6 
v.  Hubl  and  Allen  use  the  following  numbers  for  white  and  yellow 
wax : 
White  Wax  Chem-  Yellow 
ically  Bleached.  Wax. 
Acid  number  24  20 
Ester  number  71  75 
Saponification  number  95  95 
Proportional  number  2*96  3-75 
The  question  of  including  the  acid  and  saponification  number  in 
the  pharmacopceial  description  of  the  waxes  and  spermaceti  I 
would  consider  as  being  in  the  right  direction,  bat  I  would  also 
include  all  the  fat  oils  in  this  group,  as  here  the  recognition  of  adul- 
teration is  possibly  of  greater  importance.  Should  these  require- 
ments be  included  in  our  Pharmacopoeia,  it  would  be  necessary  to 
experiment  with  the  formulas  for  cerates  and  ointments,  so  as  to 
adapt  them  to  the  increased  requirements  for  purer  crude  materials. 
The  application  of  these  saponification  processes  is  not  any  more 
difficult  than  the  volumetric  examinations  which  have  been  incor- 
porated in  our  present  Pharmacopoeia. 
POWDER  FOLDERS.1 
By  I.  M.  WEii^s. 
The  powder  folder  is  one  of  the  indispensables  of  a  well-equipped 
prescription  counter,  and  should  combine  the  following  qualities  in 
order  to  be  a  success : 
"■Read  at  the  meeting  of  the  Pennsylvania  State  Pharmaceutical  Associa- 
tion, June,  1900. 
