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1857.   - 
A  BASIC  REACTION  OF  AROMATIC  AND  FATTY 
ALDEHYDES.1 
By  Samuei*  S.  Sadtler. 
While  carrying  on  some  work  on  oils  of  orange  and  lemon,  I  found 
it  very  difficult  to  get  accurate  determinations  of  the  citral  in  certain 
of  these  oils.  They  were  so-called  oleo-resins  of  orange  and  lemon, 
which  contain  a  relatively  large  percentage  of  acid  resins,  and  have 
not  to  my  knowledge  been,  as  yet,  described.  These  oils  are 
obtained  by  extraction  with  a  volatile  solvent,  which  seems  to  dis- 
solve certain  constituents  from  orange  and  lemon  peel,  which  either 
^ead  at  a  stated  meeting  of  the  Franklin  Institute,  before  the  Chemical 
Section,  and  reprinted  from  advance  sheets  of  the  Journal  of  the  Franklin 
Institute. 
