356  Analytical  Researches  and  Investigations.   |    ju?y ^ssS""' 
the  funnel  brushed  olf,  and  the  funnel  with  its  attached  filter  paper,  as 
well  as  the  exit  end  of  the  syphon,  washed  with  a  small  quantity  of 
ether  or  alcohol.  Obviously  the  apparatus  may  be  used  for  all  opera- 
tions in  which  ether,  etc.,  is  used  for  the  separation  of  alkaloids  or  fatty 
principles.  By  having  a  third  aperture  in  the  cork,  and  fitting  into  it 
the  delivery  tube  of  a  burette,  the  apparatus  could  be  employed  in 
certain  volumetrical  analyses.  Under  such  circumstances  the  tube 
carrying  the  funnel  should  be  depressed  until  the  mouth  of  the  funnel 
is  almost  in  contact  with  the  bottom  of  the  bottle,  and  the  necessary 
agitation  of  the  fluid,  after  addition  of  the  precipitant,  would  then  be 
effected  by  drawing  air  through  it  by  the  small  bent  tube. — Phar.. 
Jour,  and  Trans.  May  6,  1882;  Jour,  of  Soc.  of  Chem.  Indus. 
ANALYTICAL  EESEARCHES  AND  INVESTIGATIONS. 
Collated  bv  Prof.  Fredekick  B.  Power,  Ph.D. 
Two  New  Methods  for  the  Detection  of  Cadmium  in  the  Presence  of 
Copper.  By  Anton  Orlowsky. — 1.  The  solution,  from  which  the 
bismuth  has  been  removed,  is  acidulated  with  hydrochloric  acid, 
stannous  chloride  added  until  decoloration  ensues,  and  then  heated 
to  boiling  with  precipitated  sulphur,  whereby  the  entire  amount  of 
copper  is  precipitated  as  cuprous  sulphide;  from  the  filtrate  the  tin 
is  precipitated  by  an  excess  of  ammonia,  filtered,  and  the  filtrate 
tested  with  ammonium  sulphydrate  for  cadmium. 
2.  The  solution,  freed  from  bismuth,  is  acidulated  with  hydro- 
chloric acid,  sodium  hyposulphite  is  then  added  and  the  mixture 
boiled  until  the  yellow  precipitate  which  is  first  produced  changes 
to  a  dark  brown;  the  filtrate  is  then  tested  for  cadmium. —  Chem. 
Zeitung,  No.  24,  1882,  p.  475,  from  Ztschr.  Anal.  Chem.,  21,  p.  214. 
Distinction  of  Bee  Honey  from  Artificial  Honey.  By  Dr.  Planta. 
— For  the  i)reparation  of  artificial  honey,  glucose  and  cane  sugar 
syrup  are  print-ipally  employed.  If  such  a  manufactured  honey  be 
mixed  with  alcohol,  a  white  preci])itate  of  dextrin  is  thrown  down,, 
whilst  bee  honey  by  the  same  treatment  only  becomes  strongly  tur- 
bid. The  most  certain  means  of  recognition,  however,  is  the  esti- 
mation of  the  sugar,  the  amount  of  grape  sugar  being  first  esti- 
mated directly,  and  finally  after  boiling  with  2  per  cent,  sulphuric 
acid. — Ibid.,  from  Deuisch.  Zucker.  Ind.,  1882,  p.  388. 
Estimations  of  Ash. — The  tedious  operation  of  the  estimation  of 
