406  Rhizome  of  Iris  Versicolor.  {Ams5?x5S,*L 
• 
Sachet  Mille  Fleurs. — Tonka  3i.,  vanilla  3'rii.,  cinnamon  and  cloves 
each  ^iv.,  rose  leaves  3ii.,  orris  root  gv.,  oils  of  mirbane,  lavender 
and  rosegeranium  each  gtt.x.,  comminute  by  grating,  cutting  or  bruis- 
ing, and  mix. 
May-Wine  Essence. — Coumarin  gr.iv.,  spirit  of  orange  (made  with 
freshly  grated  orange  peel),  water,  each  fsxii.;  dissolve,  mix,  and  if 
desirable,  color  with  caramel.  A  few  ounces  are  sufficient  to  flavor  a 
gallon  of  Rhine  or  California  wine. 
EXAMINATION  OF  THE  RHIZOME  OF  IRIS  VERSICOLOR. 
BY  CARL  H.  MARgUARDT,  PH.G, 
[Abstract  from  an  Inaugural  Essay.) 
Eight  troyounces  of  the  rhizome,  in  moderately  fine  powder,  was 
exhausted  by  alcohol,  spec.  grav.  '835,  and  the  alcohol  distilled  off. 
The  residue  had  a  very  acrid  taste,  and  separated  into  an  upper,  dark- 
brown,  perfectly  transparent  layer,  and  a  lower  one  of  a  more  yellow- 
ish color  ;  the  former  was  soluble  in  alcohol,  petroleum  benzin,  chlo- 
roform and  ether ;  the  latter  dissolved  completely  in  alcohol,  partly  in 
ether,  and  not  in  chloroform  or  benzin.  The  entire  residue  was 
exhausted  with  ether  and  the  solvent  evaporated,  leaving  a  dark-brown 
oleo- resin,  of  a  slight  disagreeable  odor  and  a  very  acrid,  persistent 
taste.  Ammonia  water  dissolved  a  small  portion  of  it,  but  effected  no 
complete  separation.  Treated  with  cold  solution  of  potassa,  a  yellow- 
ish-white emulsion  was  formed,  from'  which  an  oily  liquid  separated^ 
which  was  purified  by  dissolving  in  ether,  and  had  then  a  light  color 
and  a  pleasant,  bland  taste,  which  after  awhile  became  acrid. 
The  potassa  solution  was  carefully  neutralized  with  sulphuric  acid, 
concentrated  by  evaporation,  and  treated  with  ether,  which  dissolved  a 
brown,  soft  resin,  possessing  the  acrid  taste  in  a  very  marked  degree, 
and  yielding  with  nitric  acid  a  beautiful  purple  colored  mass,  becoming 
yellow  and  tough  after  some  hours. 
The  residue  left  by  treating  the  alcoholic  extract  with  ether  was  of 
a  yellow  color,  had  a  sweet  taste,  was  soluble  in  water  and  alcohol, 
and  by  Trommer's  test  proved  to  be  glucose. 
The  dregs  exhausted  by  alcohol,  were  extracted  with  diluted  alcohol, 
spec.  grav.  '941  ;  the  light  yellow  tincture  was  evaporated  to  a  syrupy 
consistence  and  set  aside  for  a  week,  when  a  sweet,  solid  mass 
