AmFehT,'im&Tm'}     Modified  Formula  for  Brown  Mixture.  75 
It  is  then  folded  so  far  on  the  straight  open  side,  that  both  the  straight 
sides  now  present  are  of  equal  length  (fig.  3).  The  narrow  folded  part 
(2j-  centimeters  wide,  if  a  filter  of  the  smallest  size  above  mentioned 
is  to  be  made)  is  folded  once  more,  after  which  operation  the  filter  is 
ready  for  use.  If  the  funnel  on  hand  should  happen  to  have  a  larger 
angle  (be  wider)  than  60°,  the  filter  may  be  easily  adjusted  by  folding 
the  narrow  part  in  the  direction  from  a  to  b  (fig.  4) ;  if,  however,  the 
angle  of  the  funnel  should  be  smaller  than  60°,  the  filter  may  be  made 
to  fit  by  folding  the  closed  side  in  an  oblique  direction  as  shown  (fig.  5). 
By  making  filters  in  this  way,  two-fifths  of  the  paper  necessary  for 
ordinary  filters  are  saved ;  but  three  sheets  are  used  instead  of  five,  a 
matter  of  importance  and  therefore  to  be  taken  notice  of. 
It  is  obvious  that  this  kind  of  filters  will  suit  also  for  pharmaceuti- 
cal work  in  all  cases,  which  allow  or  require  the  use  of  a  plain  filter. 
It,  furthermore,  may  be  taken  into  consideration,  that,  no  doubt,  fil- 
tration will  go  on  much  quicker  by  means  of  such  a  filter  than  by  an 
ordinary  plain  filter,  it  offering  a  simple  layer  only  of  paper  to  the 
liquid  to  be  filtered. 
MODIFIED  FORMULA  FOR  BROWN  MIXTURE. 
By  J.  H.  Buckingham,  Ph.  G. 
Read  at  the  Pharmaceutical  Meeting,  January  15th. 
It  has  always  seemed  strange  that,  in  this  "  Age  of  Elegant  Pharm- 
acy," no  special  attention  has  been  paid  to  the  improvement  of  such  a 
valuable  preparation  as  the  Mistura  Glycyrrhizse  Composita.  The  last 
Pharmacopoeia  made  a  step  in  that  direction,  bythe  substitution  of  the 
purified  extract  of  glycyrrhiza,  but  still  the  sediment  in  part  remains. 
After  several  experiments  I  beg  leave  to  suggest  to  the  committee  on 
the  revision  of  the  Pharmacopoeia,  the  following  formula.  The  fin- 
ished preparation,  a  sample  of  wnich  I  send,  is  elegant  in  appearance, 
