828 
NOTE  ON  SOLANINE,  AND  ITS  DERIVATIONS. 
17.  Oleum  Oajeputi,  the  green  color  of  which  became  brownish- 
yellow  ;  the  deposit  was  black. 
18.  Oleum  Garyophyllorum. — The  crude  and  rectified  oils 
were  boiled  with  the  reagent ;  the  color  of  the  oil  became  violet 
and  cherry-red,  and  the  deposit  was  slate-grey.  Even  ~  of  the 
reagent  produced  a  rose  color.  Oil  of  turpentine  also  prevents 
the  action,  when  it  is  not  entirely  driven  off  by  too  strong  a 
heat. 
From  the  Laurinece,  19.  Oleum  Cassias  and  20.  Oleum  Sassa- 
fras, were  treated  in  the  same  way  :  in  both  the  reagent  became 
black,  the  color  of  the  oil  was  rendered  darker ;  the  reagent  be- 
came opake,  and  the  oil  separated  into  two  strata. 
21.  The  Oleum  Anisi  stellati  of  the  family  Magnoliacece  also 
gave  a  black  precipitate:  22.  Oleum  Valeriance  ( Valerianacece} 
behaved  in  the  same  way.  Of  the  Hutaeece  only  235  the  Oleum 
Mutce  graveol.  was  tested  ;  the  deposit  was  ash-grey ;  the  oil  was 
pale  yellow  and  became  brownish-yellow. 
24.  Oleum  Bergamottce,  of  the  family  Hesperideoe,  when  pure 
gave  an  ashy-grey  deposit  and  acquired  a  darker  color.  The 
addition  of  oil  of  lemons  entirely  prevented  the  reaction. 
Of  the  Monocotyledones,  only  25,  the  Oleum  Calami  radicis 
was  tested :  it  furnished  a  slate-grey  or  black  deposit,  and  be- 
came dark  reddish-brown. 
Oleum  Sinapis  and  Oleum  Amygdalarum  amar.,  of  which  the 
author  thinks  it  questionable  whether  tbey  are  to  be  reckoned 
among  the  essential  oils,  behave  towards  the  reagent  in  the  same 
way  as  the  oils  free  from  oxygen  ;  the  color  of  the  nitroprusside 
of  copper  becomes  a  beautiful  dark  green. 
The  chemical  nature  of  the  changes  produced  by  this  reagent 
could  not  be  ascertained  with  certainty. —  Chem.  Gaz.  April 
15,  1857,  from  Zeitch.  fur  Pharm,  1855,  and  Archiv  der 
Pharm. 
NOTE  ON  SOLANINE,  AND  ITS  DERIVATIONS. 
By  M.  A.  Moitessier. 
The  divergence  of  the  results  obtained  by  the  different  chemists 
who  have  made  analyses  of  solanine  has  led  us  to  resume  the 
study  of  this  alkaloid,  and  to  give  here  the  result  of  an  investiga- 
