AmMay?Sarm'}    Recent  Literature  Relating  to  Pharmacy,  231 
ration  is  apt  to  gelatinize,  due  (according  to  the  author)  to  formation 
of  anallotropic  form  of  basic  aluminum  acetate  (Al2(CH3Oo)4(OH)o). 
He  avoids  this  by  using  barium  carbonate  instead  of  calcium  car- 
bonate in  the  manufacture.  H.  V.  A, 
PREPARATION  OF  THE  HYDROCHLORATES  OF  QUININE. 
D.  Vitali  {Fharm.  Zeit.,  1898,  481)  finding  the  usual  method  of 
manufacture  (double  decomposition  of  quinine  sulphate  and  barium 
chloride)  unsatisfactory,  by  reason  of  barium  contamination  of  pro- 
duct, recommends  the  following  process  : 
For  normal  hydrochlorate  he  warms  17  parts  of  potassium  chlo- 
ride with  an  aqueous  solution  of  1 00  parts  normal  quinine  sulphate, 
evaporates  to  dryness  on  water-bath  and  extracts  residue  with  95 
per  cent,  alcohol,  in  which  the  quinine  salt  dissolves,  while  potas- 
sium sulphate  is  insoluble.  The  yellow  solution  is  decolorized  with 
animal  charcoal  and  evaporated. 
For  acid  hydrochlorate  he  employs  25  parts  of  potassium  chloride 
to  100  of  quinine  bisulphate,  the  process  being  identical  with  the 
preceding  one,  save  that  the  acid  chloride  crystallizes  from  concen- 
trated alcoholic  solution,  while  the  normal  has  to  be  evaporated  to 
dryness.  H.  V.  A. 
WHEAT  OIL. 
By  the  usual  methods  of  grinding,  about  1  per  cent,  of  germs  is 
obtained.  These  germs  contain  12-5  per  cent,  fatty  matter,  about 
two-thirds  of  which  can  be  removed  by  means  of  petroleum  spirits. 
The  mobile  oil  is  yellowish-brown  in  color,  and  has  a  peculiar  odor 
resembling  wheat.  It  is  soluble  in  ether,  chloroform,  petroleum 
ether,  carbon  bisulphide  and  glacial  acetic  acid  dissolves  an  equal 
volume  at  65  0  C.    It  is  insoluble  in  cold  absolute  alcohol. 
The  oil  readily  turns  rancid.  A  sample  after  standing  one  year 
contained  43-86  per  cent,  of  free  acid,  calculated  as  oleic.  The  fol- 
lowing are  some  of  the  important  constants  of  wheat  oil : 
Specific  gravity  at  1 50  C   0*9245 
Solidification-point    150  C. 
Melting-point  of  fatty  acids   .  .  39'5°  C. 
Solidification-point  of  fatty  acids  2970  C. 
Saponification  value  .  .  .  •   182*81. 
Iodine  value  of  oil  I:[5'i7 
Iodine  value  of  fatty  acids  123*27 
— G.  de  Negri,  1898,  Chem.  Ztg.,  22,  976. 
L.  F.  Kebler. 
