Am.  .Tour.  Pharrn.  i 
March,  1890.  / 
Chemical  Notes* 
127 
CHEMICAL  NOTES. 
By  Henry  C.  C.  Maisch,  Ph.G.,  Ph.D. 
Oil  of  Rosemary. — R.  A.  Cripps  {Pharm.  Jour,  and  Trans.  Nov. 
2j,  188c)  p.  405)  examined  four  samples  of  this  oil,  and  found  two  adul- 
terated with  petroleum  and  two  with  alcohol.  The  adulteration  in 
the  first  two  oils  was  found  by  heating  on  a  waterbath  until  the 
odor  had  completely  disappeared.  The  solubility  of  the  oils  in 
alcohol  of  0-838  sp.  gr.  was  I  in  20  resp.  30  parts,  pure  oil  dis- 
solving in  5  pts.  of  alcohol.  The  solutions  were  of  a  yellow  color, 
one  showing  fluorescence.  The  oils  adulterated  with  alcohol  were 
colored  by  magenta  and  were  soluble  in  4^  resp.  3^  pts.  alcohol 
of  the  above  specific  gravity. 
Seeds  of  Euphorbia  Lathyris. — R.  Tawara  reported  to  the  Chemi- 
cal Society  of  Tokio  {Chem.  Zeit.,  1889,  p.  1706)  on  a  chemical 
investigation  of  the  Chinese  drug  sokusuischi  (seeds  of  E.  Lathyris). 
The  author  found  besides  the  oil,  noticed  by  O.  Zander,  two  crys- 
talline principles,  one  of  which  proved  to  be  identical  with  aesculetin. 
The  second  body  was  not  further  examined  on  account  of  scarcity 
of  material,  it  being  present  in  the  seeds  to  the  amount  of  0  024  per 
cent.    ^Esculin  does  not  seem  to  be  present. 
Two  new  Sugars  from  Quebracho — C.  TanrGt  (Comfi.  rend.,  1889, 
cix,  p.  908)  mixed  coarsely  powdered  quebracho  bark  (Aspido- 
sperma  Quebracho)  with  milk  of  lime  and  extracted  the  same  with 
500  alcohol.  The  liquid  is  evaporated  to  y2  liter  for  every  kilo  of 
the  bark  used,  neutralized  with  acetic  acid  and  treated  with  basic 
acetate  of  lead.  The  sugar  is  precipitated  from  the  filtrate  with 
ammoniacal  lead  acetate,  well  washed  and  decomposed  with  dilute 
sulphuric  acid.  This  solution  is  evaporated  to  a  syrupy  consistency, 
dissolved  in  alcohol  of  90  per  cent.to  saturation,  precipitated  with  ether 
and  further  purified.  The  sugar,  quebrachit,  has  the  composition 
C7H1406,  sp.  gr.  1-54  at  o°  C,  melts  at  i86°-i87°  C,  boils  in 
vacuo  at  2100  C.  subliming  in  needles,  is  lsevogyre  a  [D]  =  —  8o°, 
does  not  reduce  Fehling's  test,  reduces  ammoniacal  silver  nitrate  on 
boiling  and  does  not  undergo  fermentation  with  yeast.  Quebrachit 
heated  with  hydriodic  acid  yields  a  laevogyre  inosit  C6Hl2Og,  an 
aromatic  compound,  melting  at  2380  C,  boiling  in  vacuo  at  250  ; 
rotation  a  [D]  =  —  550. 
Frangulin. — Prof.  T.  E.  Thorpe  and  H.  H.  Robinson  {Chem. 
Society ',  Dec.  19,  1889)  use  the  following  method  for  preparing  the 
