AmAp°rii,'i894aim*}   Gleanings  from  the  German  Journals.  199 
how  long  (from  2  to  6  hours)  the  continuous  extraction  with  ether 
of  a  mixture  containing  known  quantities  of  conine  was  continued 
the  total  quantity  of  alkaloid  could  never  be  obtained.  The  explana- 
tion given  is  that  the  alkaloid  being  volatile  is  carried  along  with 
the  ether  and  travels  continuously  from  the  receiving  flask  to  the 
percolator  and  back  again ;  by  placing  in  the  receiving  flask  an 
excess  of  acid  and  then  continuously  extracting  with  ether ;  the 
entire  amount  of  conine  taken  for  the  experiment  could  be  recovered 
by  an  extraction  lasting  only  fifteen  to  thirty  minutes ;  the  excess  of 
acid  is  afterwards  titrated  with  alkali,  and  from  the  difference 
the  amount  of  conine  is  calculated.  This  method  appears  to  be  the 
only  one  yielding  reliable  results,  since  in  the  methods  of  extracting 
the  alkaloids  from  alkaline  solutions  with  solvents  and  evaporating 
the  solvents,  no  matter  how  carefully  the  latter  operation  is  conducted, 
some  of  the  alkaloid  is  lost  by  evaporation. — Pharm.  Ztg.,  1894,  57, 
Extractum  quebracho. — Kremel  calls  attention  to  the  act  that 
there  appears  in  the  Austrian  market  an  extract  bearing  the  above 
name,  which  is  made  from  another  bark  Loxopterygium  Lorentzii, 
also  known  as  the  bark  of  "quebracho  Colorado,"  the  true  quebra- 
cho being  known  as  "  quebracho  bianco."  To  this  similarity  in 
names  is  attributed  the  above  substitution  ;  the  true  extract,  owing 
to  its  alkaloidal  constituent,  gives  with  tannin  a  precipitate,  the 
extract  of  quebracho  Colorado  does  not  contain  an  alkaloid,  hence> 
will  not  react  with  tannin ;  on  the  contrary,  owing  to  the  tannin 
which  it  contains  will  cause  a  precipitate  when  added  to  a  solution 
of  the  true  extract. — (Oesterr.  Ztschr.  f.  Pharm.)  Pharm.  Ztg.» 
1894,  9i. 
Liquor  ammonii  ergotinici,  a  solution  of  which  one  cc.  represents 
three  grams  of  ergot  or  three  decigrams  of  ammonium  ergotinate, 
is  claimed  to  be  a  solution  of  the  salts  of  a  decomposition  product 
of  ergot,  which  while  retaining  the  full  activity  of  the  drug  is  more 
permanent  and  reliable  than  the  preparation  made  directly  from  the 
drug;  the  dose  is  15  to  20  drops;  for  subcutaneous  injection  the 
charge  of  a  Pavraz  syringe. — Dr.  A.  Voswinkel,  Pharm.  Ztg.,  1894, 
100. 
Pyrotoxina  bacterica,  the  fever  poison  produced  by  bacteria  in 
infectious  fevers,  is  isolated  from  cultures  in  liquid,  non-peptonic, 
nourishing  media ;  the  process  of  isolation  is  based  upon  the  follow- 
