366  Pharmacy  of  British  Pharmacopoeia.  [ 
Am.  Jour.  Pharm. 
August,  1915. 
of  the  British  Pharmacopoeia  are  superior  because  of  such  exposure 
to  heat. 
The  unsatisfactory  and  tedious  process  for  extract  of  ergot  of 
the  1898'  Pharmacopoeia  is  replaced  by  a  process  in  which  the  ergot  is 
extracted  by  water,  the  aqueous  extract  concentrated,  and  alcohol 
added;  after  standing,  the  liquid  is  filtered  off  and  evaporated  to 
proper  consistence. 
Extractum  filicis  liquidum  is  made  with  ether  and  corresponds  to 
our  oleoresin  of  male  fern.  Description,  tests,  and  assay  process  for 
filicin  are  introduced,  and  the  product  is  standardized  as  containing 
20  per  cent,  of  filicin. 
Extractum  glycyrrhizse  is  to  be  made  by  macerating  liquorice 
root  with  chloroform  water,  expressing  and  heating  the  expressed 
liquid  to  ioo°,  then  straining  and  evaporating.  The  liquid  extract  is 
made  by  a  similar  process,  the  alcohol  being  finally  added  only  as  a 
preservative.  j 
Extractum  hydra stis  liquidum  is  to  be  prepared  with  60  per  cent, 
alcohol  (instead  of  45  per  cent,  in  1898)  and  to  be  standardized  to 
contain  2  Gm.  of  hydrastine  in  100  mils,  of  the  product. 
Extractum  ipecacuanha?  liquidum  is  to  be  prepared  by.  extracting 
with  90  per  cent,  alcohol  without  the  treatment  with  lime  as  directed 
in  the  Pharmacopoeia  of  1898,  and  is  to  be  standardized  so  that  100 
mils,  shall  contain  3  Gm.  of  alkaloid. 
Extractum  nucis  vomicae  liquidum  is  to  be  prepared  with  70 
per  cent,  alcohol,  the  fat  removed  by  treatment  with  melted  hard 
paraffin,  and  the  product  standardized  to  contain  1.5  Gm.  strychnine 
in  100  mils.  No  attempt  is  made  to  recover  the  alkaloid  removed  by 
the  paraffin  de- fatting. 
Four  formulas  are  given  for  hypodermic  injections.  While  there 
may  be  good  reason  to  endorse  a  standard  formula  for  a  hypodermic 
injection  of  ergot,  there  is  a  better  reason  that  would  require  that  this 
be  directed  to  be  dispensed  in  sterilized  and  sealed  ampoules.  In 
this  day  of  universally-used,  well-prepared,  and  stable  hypodermic 
tablets  it  seems  unnecessary  to  include  in  a  modern  pharmacopoeia 
formulas  for  hypodermic  injections  of  morphine,  strychnine,  etc. 
Liquor  ethyl  nitrite  is  retained  as  the  title  for  a  preparation 
containing  from  2.5  to  3  per  cent,  of  ethyl  nitrite  in  a  mixture  of 
95  volumes  of  absolute  alcohol  and  5  volumes  of  glycerine.  There 
is  also  official  the  spiritus  aetheris  nitrosi,  containing  1.52  to  2.66 
