km'reb.Vi54?rm'}   Gleanings  from  the  German  Journals.  99 
part  phenol,  two  parts  cocaine,  forty  parts  vaselin  oil,  and  twenty- 
parts  of  arachis  oil,  which  are  fused  together  and  put  upon  the 
market  in  tubes. — Dr.  v.  Oefele,  Pharm.  Centralhalle,  1893,  706. 
Sesame  oil. — The  color  test  for  this  oil  with  sugar  and  hydrochloric 
acid  which  has  been  considered  a  characteristic  test  has,  during  the 
past  few  years,  also  been  obtained  with  some  brands  of  oliv6  oil 
originating  in  Southern  Italy  and  Northern  Africa  as  well  as  with 
some  samples  of  arachis  oil.  Villavecchia  and  Fabris,  in  a  study  of 
sesame  oil,  find  the  principle  giving  the  color  to  be  a  dense, 
uncrystallizable,  non-nitrogenous  oil,  which,  in  alcoholic  solution, 
will  give  red  color  with  sugar  and  hydrochloric  acid.  In  this  test 
there  is  produced  furfurol  and  this  has  repeatedly  been  proven  to  be 
the  substance  which  is  actively  concerned  in  the  production  of  color 
reactions  as  the  sugar  in  all  such  tests  can  be  replaced  by  furfurol 
solutions;  the  tests  obtained  by  the  use  of  the  latter  are  generally 
more  delicate.  A  specific  test  for  sesame  oil,  originating  with  Villa- 
vecchia and  Fabris,  is  based  upon  the  use  of  an  alcoholic  furfurol 
solution  (2  gm.  in  100  cc.) ;  of  this  furfurol  solution  01  cc.  is  placed 
in  a  test  tube,  10  cc.  of  the  oil  under  examination  and  10  cc.  hydro- 
chloric acid,  sp.  gr.  1-19  added,  agitated  for  half  a  minute  and 
allowed  to  stand  ;  in  the  presence  of  one  per  cent,  sesame  oil  in  the 
suspected  oil  the  aqueous  solution  separates  with  a  red  color, 
while  in  the  absence  of  sesame  oil  only  a  yellowish  color  is  produced. 
A  modification  of  this  test  consists  in  added  to  o-i  cc.  furfurol  solu- 
tion, 10  cc.  of  the  oil,  1  cc.  hydrochloric  acid,  agitating,  adding  10 
cc.  chloroform  to  dissolve  the  oil  and  noting  the  color  of  the 
aqueous  layer;  less  than  one  per  cent,  sesame  oil  is  sufficient  to 
give  a  fine  red  color  ;  in  the  absence  of  sesame  oil  no  color  is  to 
be  seen,  or  in  the  cases  of  those  olive  oils  giving  the  color  with  the 
original  test  a  greenish  color  is  produced. — G.  Morpurgo,  Pharm.  Post, 
1893,  537- 
Carbon  disulphide  is  employed  in  chemical  analysis  by  F.  Musset 
as  a  means  of  separating  small  quantities  of  precipitates,  indifferent 
to  hydrogen  sulphide,  from  aqueous  suspension  ;  the  precipitates, 
becoming  suspended  in  the  carbon  disulphide  if  a  small  quantity  of 
this  be  agitated  with  the  aqueous  mixture,  the  aqueous  solu- 
tion becomes  perfectly  clear  so  that  it  can  be  decanted ;  after  the 
evaporation  of  the  carbon  disulphide  from  a  capsule  the  precipitate 
is  obtained  in  a  condition  for  further  examination.    The  advantage 
