236  Fluid  Extracts  of  the  New  Pharmacopoeia.    { ^^£7188^'"' 
delphia  College  of  Pharmacy  recommended  the  following  process  :  add 
to  one  hundred  parts  of  triticum  three  hundred  parts  of  boiling  water, 
and  digest  in  a  covered  vessel  for  five  hours ;  then  strain  off  the 
infusion,  pack  the  triticum  in  a  percolator,  and  add,  first  the  infusion 
and  then  boiling  water,  until  the  triticum  is  exhausted;  evaporate  the 
percolate  to  eighty-five  parts,  and  when  cool,  add  fifteen  parts  of  alco- 
hol ;  a  sample  thus  made  in  January,  1880,  now  contains  only  a  mod- 
erate precipitate,  and  appears  to  have  undergone  no  change  whatever. 
Another  sample,  containing  no  alcohol,  was  prepared  at  the  same  time 
as  the  first,  by  adding  thirty  parts  of  glycerin  to  the  percolate  and 
evaporating  the  whole  to  one  hundred  parts;  this  now  contains  about 
five  times  as  much  precipitated  matter  as  the  other  sample. 
ExTRACTUM  Uv^  Ursi  Fluidum. — Fluid  Extract  of  Uva  Ursi. — 
For  this  preparation  the  Pharmacopoeia  of  1870  directed  a  menstruum 
composed  of  eight  fluidounces  of  alcohol,  three  fluidounces  of  glycerin, 
and  five  fluidounces  of  water,  finishing  the  percolation  with  diluted 
alcohol,  and  adding  one  fluidounce  of  glycerin  to  the  dilute  percolate 
before  evaporation.  The  present  Pharmacopoeia  directs  diluted  alcohol, 
with  ten  per  cent,  of  glycerin  in  the  first  one  hundred  parts ;  the 
Philadelphia  College  of  Pharmacy  recommended  a  menstruum  com- 
posed of  one  part  of  alcohol  and  two  parts  of  water,  with  twenty  per 
oent.  of  glycerin  in  the  first  one  hundred  parts ;  a  sample  thus  pre- 
pared in  November,  1879,  now  contains  only  a  moderate  precipitate, 
and  is  in  every  other  respect  in  good  condition ;  as  this  sample  has 
kept  so  well,  the  use  of  the  stronger  officinal  menstruum  appears  to  be 
unnecessary. 
ExTRACTUM  Valeriana  Fluidum. — Fluid  Extract  of  Valerian. 
— For  this  preparation  the  Pharmacopoeia  of  1870  directed  stronger 
alcohol.  The  present  Pharmacopoeia  directs  a  menstruum  composed 
■of  two  parts  of  alcohol  and  one  part  of  water,  and  the  Philadelphia 
College  of  Pharmacy  recommended  the  same ;  a  sample  thus  prepared 
in  August,  1879,  is  now  in  good  condition,  containing  only  a  small 
precipitate  and  a  very  slight  deposit  of  separated  matter  on  the  sides 
of  the  bottle  above  the  fluid  extract. 
The  present  officinal  menstruum  has  been  thoroughly  tried,  and 
the  product  proved  to  be,  in  many  respects,  superior  to  the  product  of 
that  formerly  officinal. 
ExTRACTUM  Veratri  Viridis  Fluidum. — Fluid  Extract  of 
Veratrum  Viride. — For  this  preparation  the  Pharmacopoeia  of  1870 
