AmJ™%^rm'}      Resins,  Gum  Resins  and  Balsams.  133 
2.  The  alcoholic  solution  gives  with  ammonia  a  turbid  mixture. 
a.  Perchloride  of  iron  gives  a  precipitate  that  is  neither  dissolved  by  boiling  nor 
in  ether— Borneo  Copal. 
b.  Perchloride  of  iron  gives  no  precipitate. 
a.  Completely  soluble  in  ether-alcohol.  Chloral  test  colors  residue  from  evap- 
oration of  petroleum  spirit  extract  blue  to  blue  violet — Liquidambar  styra- 
ciflua  Balsam. 
0.  Incompletely  soluble  in  ether-alcohol. 
a.  The  drug  contains  sulphur. 
C.  Yields  umbelliferon  by  dry  distillation. 
E.  Hydrochloric  acid  colors  the  petroleum  spirit  extract  residue  reddish  - 
yellow;  the  chloral  test  golors  it  green — Persian  Sagapenum. 
F.  Hydrochloric  acid  colors  the  residue  blue-violet ;  chloral  test  colors  it 
rose  color  to  raspberry-red  and  violet — Levant  Sagapenum. 
g.  Not  colored  by  hydrochloric  acid.    The  solution  of  the  drug  in  sul- 
phuric acid  is  yellow  brown  with  a  blue  fluorescenee.  Potassium  nitrate 
colors  the  gum  resin  malachite-green — Ordinary  Asafoetida. 
D.  Yields  no  umbelliferon  by  dry  distillation. 
E.  Sodium  carbonate  solution  colors  the  drug  light  brown,  and  the  extract 
is  not  altered  by  acetic  acid  or  lead  acetate — Asafoetida  from  Ferula 
alliacea. 
F.  Sodium  carbonate  solution  forms  an  emulsion  that  cannot  be  filtered. 
H.  Lead  acetate  gives  no  precipitate.    Iodine  solution  is  not  altered — 
Indian  Bdellium. 
I.  Lead  acetate  produces  immediately  or  after  a  short  time  a  precipitate 
that  dissolves  upon  warming.    Iodine  solution  is  not  altered — Afri- 
can Bdellium. 
"S.  The  drug  contains  no  sulphur. 
C  Yields  umbelliferon  by  dry  distillation. 
E.  The  petroleum  spirit  extract  residue  is  colored  by  hydrochloric  acid 
and  the  chloral  test. 
H.  Hydrochloric  acid  colors  reddish-yellow;  the  chloral  test  colors  green 
— Persian  Galbanum. 
I.  Hydrochloric  acid  colors  red-violet ;  the  chloral  test  colors  greenish — 
Levant  Galbanum  as  at  present  in  commerce. 
K.  Hydrochloric  acid  colors  violet-blue;  the  chloral  test  carmine-red-— 
Older  specimens  of  Levant  Galbanum. 
f.  Hydrochloric  acid  gives  no  color;  the  chloral  test  colors  light  brown 
— African  Ammoniacum. 
D.  Yields  no  umbelliferon  by  dry  distillation. 
E.  Chloride  of  lime  solution  colors  the  gum  resin  orange-yellow — Persian 
Ammoniacum. 
F.  Chloride  of  lime  solution  produces  no  color.    Lead  acetate  gives  no 
precipitate. 
H   Iodine  solution  is  not  altered  ;  the  chloral  test  colors  greenish — Olib- 
anum. 
1.  Iodine  solution  is  not  altered  ;  the  chloral  test  gives  no  color — Indian 
Myrrh. 
g.  Chloride  of  lime  solution  produces  no  color.    Lead  acetate  gives  a  pre- 
cipitate 
H.  Bromine  solution  colors  violet-red;  the  chloral  test  colors  violet — 
Ordinary  Myrrh. 
I.  Bromine  solution  produces  no  color  or  only  yellowish.  Perchloride 
of  iron  colors  green — Opoponax. 
k.  Bromine  solution  produces  no  color  or  only  yellowish.  Perchloride 
of  iron  colors  brownish — Euphorbium. 
— Phar.  Jour,  and  Trans.,  Nov.  17,  1877. 
