Am-^our.Pbarm.|       [uid  Exlvacts  of  the  New  Fharmacopoela.  127 
bottle  are  thinly  coated  with  the  same,  and  floating  })articles  of  it  are 
distributed  throughout  the  entire  body  of  the  fluid  extract;  a  menstruum 
similar  to  the  officinal,  was  recommended  for  grindelia  by  a  California 
writer  several  years  ago,  and  no  doubt  this  weaker  spirit  was  adopted 
by  the  C/Ommittee  of  Revision  for  some  other  reason  than  cheapness, 
but  its  superiority  over  alcohol  is  not  apparent. 
ExTRACTUM  GuARAN^  Fluidum. — Fluid  Extract  of  Gruarana. — 
This  is  also  a  new  preparation,  the  Pharmacopoeia  directs  a  menstruum 
composed  of  three  parts  of  alcohol  and  one  part  of  water ;  the  Philadel- 
phia College  of  Pharmacy  recommended  two  parts  of  alcohol  and  one 
part  of  water.  A  sample  thus  prepared  in  December,  1879,  has  only  a 
very  slight  precipitate,  and  is  in  every  other  respect  perfect ;  a  spirit  of 
the  officinal  strength  appears  to  be  quite  unnecessary,  although  it  may 
furnish  an  equally  permanent  preparation. 
ExTRACTUM  Hamamelidis  Fluidum. — Fluid  Extract  of  Hama- 
melis. — This  is  one  of  the  eleven  added  to  the  list  by  the  Committee 
of  Revision ;  the  memstruum  dinjcted  is  one  part  of  alcohol,  and  two 
parts  of  water,  which  no  doubt  thoroughly  extracts  the  witchhazel 
leaves. 
ExTRACTUM  Hydrastis  Fluidum. — Fluid  Extract  of  Hydrastis. — 
For  this  preparation  the  Pharmacopoeia  of  1870  directed  fourteen  fluid- 
ounces  of  alcohol,  and  two  fluidounces  of  glycerin,  finishing  the  perco- 
lation with  a  mixture  of  two  parts  of  alcohol,  and  one  part  of  water 
The  present  Pharmacopoeia  directs  a  menstruum  composed  of  three 
parts  of  alcohol  and  one  part  of  water.  The  Philadelphia  College  of 
Pharmacy  recommended  the  same;  a  sample  thus  prepared  in  Novem- 
ber, 1879,  now  contains  a  moderate  precipitate, and  a  very  thin  coating  of 
brownish  color  deposited  on  the  sides  of  the  bottle,  in  all  other  respects 
the  sample  is  in  good  condition.  Another  sample  prepared  at  the  same 
time,  with  a  menstruum  of  one  part  of  alcohol,  and  one  part  of  water, 
with  ten  per  cent,  of  glycerin  in  the  first  one  hundred  parts,  now  contains 
only  a  very  slight  sediment,  and  no  deposit  on  the  sides  of  the  bottle ; 
this  fluid  extract,  however,  is  not  quite  as  transparent  as  the  other 
sample.  The  addition  of  ten  per  cent,  of  glycerin  to  the  first  one  hun- 
dred parts  of  the  officinal  menstruum,  would  probably  prevent  all 
precipitation. 
ExTRACTUM  Hyoscyami  Fluidum. — Fluid  Extract  of  Hyoscya- 
mus. — For  this  preparation  the  Pharmacopoeia  of  1870  directed  a 
menstruum  composed  of  twelve  fluidounges  of  alcohol,  three  fluid- 
