Am"/a0^yi887arm'}    Galbanum  from  Ferula  Galbaniflua.  37 
the  whole  of  it  as  recommended  by  Dragendorff,  in  a  current  of  dry 
air,  the  air  being  dried  by  passing  through  sulphuric  acid  and  over 
chloride  of  calcium. 
The  petroleum  ether  extracted  *1254  gram;  adding  to  this  '03  as 
the  loss  during  evaporation  would  give  *1554  gram  or  3'1080 
per  cent. 
Ether. — The  portion  of  the  5  grams  remaining  from  the  petroleum 
ether  extraction  was  next  treated  with  ether  and  allowed  to  remain  as 
before.  This  was  decanted  and  evaporated  over  a  water-bath.  It  was 
only  after  several  days  that  the  weight  was  found  to  be  constant,  at 
the  latter  stages  of  the  operation  the  evaporation  taking  place  slowly. 
The  matter  extracted  by  ether  was  found  to  weigh  3*060  grams.  This 
was  then  treated  with  alcohol,  in  which  it  was  almost  wholly  soluble, 
*226  gram  of  the  3*060  grams  remaining  undissolved. 
The  alcoholic  extractive  was  evaporated,  and  consisted  of  a  brittle 
resin,  the  melting  point  of  which,  when  taken  over  mercury,  was 
found  to  be  57°  C.  The  resin  was  soluble  in  soda,  from  which  it  was 
reprecipitated  by  an  acid. 
Alcohol. — The  portion  of  the  gum-resin  remaining  from  the  ether 
extraction  was  next  treated  with  alcohol.  The  resulting  fluid  was 
evaporated  over  a  water-bath.    The  residue  weighed  *3788  gram. 
Water. — The  portion  of  the  gum-resin  remaining  from  the  alcohol 
extraction  was  next  treated  with  distilled  water.  The  filtrate  evapo- 
rated over  a  water-bath  yielded  *8514  gram  of  residue. 
The  latter  was  again  treated  with  water,  and  various  reagents  ap- 
plied. With  ammonium  oxalate  and  subacetate  of  lead  the  solution 
of  gum  gave  copious  precipitates,  but  none  with  acetate,  of  lead 
or  borax. 
Insoluble  Matter. — The  portion  of  the  gum-resin  insoluble  in  petro- 
leum ether,  ether,  alcohol  and  water,  was  found  to  weigh  *5280  gram. 
Volatile  Oil  and  Moisture. — *7876  gram  of  the  powdered  gum-resin 
above  referred  to  Avas  next  taken ;  this,  after  several  days'  evaporation, 
lost  *042  gram,  which  would  represent  5*332  per  cent.,  and  would  be 
the  volatile  oil  and  moisture. 
Ash. — In  order  to  determine  the' ash  1*5792  gram  of  the  gum-resin 
was  taken  and  burnt  in  a  furnace  The  ash,  which  was  white,  weighed 
*039  gram;  this  would  represent  2*463  per  cent. 
Upon  examination  the  ash  was  found  to  consist  ot  carbonates  of 
calcium  and  sodium,  sulphates  and  phosphates  being  absent. 
