14 
Chemical  Notes. 
Am.  Jour.  Pharni. 
Jan.,  1890. 
from  Neuweiler  ini  Steinthal,  rotation  +10*7°  Laurent,  and  the  other 
from  Upper  Alsatia,  showing  +1026°  Laurent  in  a  200  mm.  tube. 
The  rotation  was  due  to  a  dextrin,  of  which  the  former  contained 
6*1209  per  cent,  the  latter  9 "03  per  cent.  Both  honeys  were  natural 
products. 
Olive  Oils  from  various  sources. — L.  Archbutt  {Jour,  of  Soc.  Chem. 
Industry,  vii,  1889,  p.  685-686,  through  Chem.  Centralb.,  1889,  ii, 
p.  886)  examined  70  Spanish  oils,  10  of  which  were  adulterated,  the 
percentage  of  free,  fatty  acids  varying  from  25*1  percent.,  the  highest, 
to  1*5  per  cent.,  the  lowest,  the  average  being  5*5  per  cent.  Of  29 
Italian  oils  only  one  was  adulterated.  Fatty  acids:  highest,  25'2  per 
cent. ;  lowest,  0*9  per  cent. ;  average,  8  5  per  cent.  Only  9  of  22 
Sicilian  oils  were  pure.  Fatty  acids  :  highest,  16 '6  per  cent;  lowest, 
0*5  ;  average,  9*1  per  cent. 
Reactions  of  Oil  of  Sesame. — W.  Bishop  (Jour,  de  Pharm.  et  de  Chim. 
(5),  xxx  (1889),  p.  244-247)  states  that  ol.  sesame  which  has  been  exposed 
to  air  and  sunlight  for  a  few  days  gives  a  green  color  when  shaken  with 
hydrochloric  acid  21-22°  B.  fsp.  gr.,  M670-M763).  According  to 
the  author,  5-10  per  cent,  of  sesame  oil  may  be  detected  in  olive  oil 
by  this  method.  The  oil  is  exposed  to  the  action  of  sunlight  aed  air 
for  a  few  days  and  then  6-8  cc.  of  the  oil  shaken  with  12-14  cc.  HC1 
of  above  strength  in  a  stoppered  flask  holding  about  35  cc. 
Estimation  of  Morphine  in  Opium. — Prof.  F.  A.  Fliickiger  (Arch.  d. 
Pharm.,  1889,  p.  721-732)  estimates  morphine  in  the  following 
manner :  8  gm.  of  powdered  opium  are  placed  in  a  plaited  filter 
12  cm.  in  diameter,  the  funnel  being  slightly  tapped  in  order  to  bring 
the  powder  to  the  bottom,  and  the  whole  dried  at  100°  C.  After  half 
an  hour,  a  mixture  of  10  cc.  chloroform  and  10  cc.  ether  is  poured  on 
the  powder,  the  funnel  being  covered  and  tapped  a  number  of  times ; 
then  10  cc.  chloroform  additional  are  poured  on.  After  the  liquid 
has  drained  off,  the  filter  is  spread  out  and  the  powder  dried  at  a 
slightly  elevated  temperature.  The  powder  is  then  shaken  with  80 
gm.  water  to  which  has  been  added  0*2  gm.  ammonium  oxalate  to 
separate  the  calcium  present,  and  filtered  after  two  hours.  42'5  gm. 
of  the  filtrate  are  treated  in  a  small  tared  flask  with  7*5  cc.  alcohol 
(sp.  gr.,  0*83),  15  cc.  ether  and  1  cc.  ammonia  (sp.  gr.  0'96).  After 
six  hours,  having  shaken  often,  the  contents  of  the  flask  are  poured 
on  two  plaited  filters,  one  inside  of  the  other,  and  10  cm.  in  diameter, 
the  flask  being  rinsed  with  10  cc.  water  or  an  aqueous  solution  of 
