420 
FUSEL  OTL  FROM  INDIAN  CORN  AND  RYE. 
In  neutralizing  the  remainder  of  the  liquid  to  prepare  the  salt, 
No.  3,  as  the  fluid  was  approaching  saturation,  a  peculiar  motion 
was  observed  in  the  oil  globules  floating  on  the  surface  of  the 
liquid;  they  were  spasmodically  agitated  and  repelled  each  other, 
moving  quickly  from  side  to  side,  very  much  as  some  animalcules 
appear  in  the  field  of  the  microscope.  It  was  not  a  rotation  or 
movement  like  that  of  camphor,  or  the  butyrate  of  baryta  on 
water,  though  doubtless  proceeding  from  the  same  cause. 
Fatty  Adds  in  JVos.  1,  2,  and  3. — The  soda  salt,  No.  1,  the 
residue  in  the  retort  after  the  first  neutralization  by  carbonate  of 
soda,  was  dissolved  in  water  and  nitrate  of  silver  added;  the  pre- 
cipitate was  very  slight ;  the  solution  concentrated  in  the  water 
bath  darkened  very  much.  The  residue,  after  evaporation,  yielded 
to  boiling  water,  a  small  quantity  of  precipitate,  insufficient  for 
analysis,  which  separated  on  cooling.  After  evaporation  once 
more  in  vacuo,  over  sulphuric  acid,  the  residue  evolved  a  strong 
smell  of  acetic  acid  when  treated  with  sulphuric,  and  gave  with 
sulphuric  acid  and  alcohol,  acetic  ether. 
The  soda  salt,  No.  2,  dried  up  over  sulphuric  acid  in  vacuo,  to 
a  gummy  mass.  On  the  addition  of  nitrate  of  silver  to  the  solu- 
tion, an  abundant  white  precipitate  fell,  which  was  separated  and 
redissolved  in  boiling  water,  from  which  the  greater  part  was  de- 
posited on  cooling.  The  remainder  yielded  but  little  to  boiling 
water.  I  obtained  enough  of  this  precipitate  to  make  two  atomic 
weight  determinations.  It  burned  quietly  and  left  a  spongy  mass 
of  metallic  silver,  which  left  no  residue  on  treatment  with  nitric 
acid.  0-11775  grammes  of  the  salt  gave  0*051  silver ;  and  0.128 
gave  0-0555  silver,  corresponding  to  a  per  centage  of  silver  43*26 
and  43'35.  Caprylate  of  silver  requires  by  calculation  43-028. 
I  had  not  sufficient  of  this  salt  for  an  organic  analysis. 
Soda  salt,  No.  3,  which  was  slightly  alkaline,  was  neutralized 
by  nitric  acid.  The  precipitate  by  nitrate  of  silver  darkened 
slightly  on  boiling  with  water,  with  deposition  of  a  small  quan- 
tity of  dark  metallic  silver  on  the  capsule.  A  white  curdy  preci- 
pitate separated  from  the  filtrate  before  cool,  and  on  cooling,  a 
further  quantity  of  a  slightly  grayish  precipitate.  This  latter  pre- 
cipitate, which  dried  at  100°  C,  weighed  0*0335,  gave  on  igni- 
tion, 0*016  Ag.,  or  a  per  centage  of  47*74.  The  silver  salt  of 
oenanthic  acid  contains  47*161  per  cent,  of  silver. 
