422 
FUSEL  OIL  FROM  INDIAN  CORN  AND  RYE. 
weight  determination.  The  following  is  the  result,  premising 
that — 
OEnanthylic  acid  requires  BaO  per  cent,  =  38.44 
Caprylic  "  "  "  36-20 
Capric           *            **           "  31-94 
The  first  salt  that  separated  was  in  white  imperfectly  crystalline 
scales;  0*131  gave  00555  BaOC02,  corresponding  to  32*9  per 
cent,  of  baryta.  In  these  crystallizations  the  salt  separated,  as  a 
film  on  the  surface  of  the  liquid.  The  next  salt,  0-53  gave 
BaOCO2=0'252  or  BaO  p.  c.  =36*92.  The  last  crystallization 
gave  0*194  grammes  of  a  salt  which  yielded  0*091  carbonate 
baryta,  or  36*43  per  cent,  of  baryta. 
Examination  of  the  Alcohols  of  Fusel  Oil. — The  portion  of 
fusel  oil  from  which  the  fatty  acids  had  been  separated,  was 
washed  with  water,  and  submitted  to  a  fractional  distillation.  At 
first  oil  came  over  together  with  an  under  layer  of  water,  which 
was  removed,  and  the  different  products  of  distillation  dehydrated 
with  carbonate  of  potassa,  and  with  fused  chloride  of  calcium.  A 
considerable  portion  of  chloride  of  calcium  wTas  taken  in  solution 
by  that  portion  passing  over  between  87°  and  100°,  and  which 
crystallized  out  on  cooling,  and  after  standing,  in  prisms  or  length- 
ened tables,  similar  to  the  compound  of  chloride  of  calcium  and 
water.  As  these  crystals  had  a  peculiar  smell  from  which  they 
could  not  be  freed  by  pressure  between  blotting  paper,  or  by  ex- 
posure to  the  air,  and  as  they  seemed  less  deliquescent  than  the 
ordinary  crystallized  salt  with  water, they  were  fused  to  determine 
the  amount  of  volatile  matter,  in  order  to  ascertain  whether  per- 
haps they  were  not  a  compound  of  amylic  alcohol  and  chloride  of 
calcium.  The  loss  was  49*78  per  cent.,  which  corresponds  to  the 
chloride  crystallized  with  six  equivalents  of  water,  or  49*28  per 
cent. 
After  having  dehydrated  the  portions  collected  between  81° — 
110°;  110°— 132°;  and  132°— 136°,  which  last  contained  the 
great  bulk  of  the  oil,  they  were  submitted  to  four  rectifications,  in 
which  the  following  stadia  were  observed  : 
81°_84°— 90°-100°— 110°— 120°— 129°— 132°— 136°  Cent. 
The  residue  above  136°  was  not  sufficient  to  cover  the  thermo- 
