Am^Joun  PJg^rm.  J  FlvM  Extracts  of  the  New  PharmaGopoeia,  73 
portion,  and  the  quantity  made  up  to  one  hundred  parts  with  some  of 
the  menstruum. 
This  formula  has  been  made  up  a  number  of  times  without  any 
special  difficulty,  the  product  being  an  elegant  fluid  extract,  depositing 
only  a  slight  precipitate,  and  no  doubt  possessing  whatever  medicinal 
properties  the  chestnut  leaves  may  contain. 
ExTEACTiJM  Chimaphil.e  Fluidum — Fluid  Extract  of  Chimaphila. 
— This  is  one  of  the  preparations  of  the  Pharmacopoeia  of  1870,  the 
menstruum  there  directed  being  alcohol  eight  fluid  ounces,  glycerin 
three  fluidounces,  and  water  five  fluidounces,  finishing  the  percolation 
with  diluted  alcohol.  In  the  present  Pharmacopoeia,  diluted  alcohol  is 
directed,  with  ten  per  cent,  of  glycerin  in  the  first  one  hundred  parts 
of  menstruum ;  the  Philadelphia  College  of  Pharmacy  recommended 
one  part  of  alcohol  and  two  parts  of  water  for  the  menstruum,  with 
twenty  per  cent,  of  glycerin  in  the  first  one  hundred  parts.  This 
weaker  menstruum  thoroughly  exhausts  the  pipsissewa,  but  when  kept 
long  a  considerable  precipitate  is  formed,  therefore  the  officinal  men- 
struum is  probably  the  best,  ten  per  cent,  of  glycerin  would  also  seem 
to  be  sufficient  for  this  fluid  extract. 
ExTRACTUM  Chiratj3  Fluidum. — Fluid  Extract  of  Chirata. — This 
is  one  of  the  newly-introduced  fluid  extracts,  and  one  that  surely  there 
was  no  pressing  demand  for ;  chirata  had  its  day,  years  ago,  and  is  not 
likely  to  gain  even  a  temporary  revival  in  the  near  future.  The  men- 
struum directed  for  the  preparation  of  the  fluid  extract  is  diluted  alco- 
hol with  ten  per  cent,  of  glycerin  in  the  first  one  hundred  parts,  the 
Philadelphia  College  of  Pharmacy  recommended  one  part  of  alcohol 
and  two  parts  of  water,  as  the  menstruum  without  glycerin  ;  the  fluid 
extract  prepared  after  this  formula  precipitated  considerably,  but  not 
as  much  as  some  samples  prepared  with  more  alcoholic  menstruums  5 
the  glycerin  in  the  officinal  formula  will  probably  prevent  precipitation 
to  some  extent. 
ExTRACTUM  CiMiciFUG.^]  Fluidum. — Fluid  Extract  of  Cimicifuga. 
— The  Pharmacopoeia  of  187 0,  the  present  Pharmacoj^oeia,  and  the  Phila- 
delphia College  of  Pharmacy,  all  recommend  alcohol  of  "817  to  '822  spe- 
cific gravity,  as  the  menstruum  for  this  preparation ;  this  unanimity  of 
opinion  is  fully  warranted  by  the  product;  a  sample  of  the  fluid  extract 
prepared  over  three  years  ago  is  quite  free  of  sediment,  and  as  bright 
and  clear  as  when  first  made. 
