EXTRACTION  OF  OIL  BY  MEANS  OF  SULPHIDE  OF  CARBON.  549 
Black  Sulphur et  of  Antimony. — A  quantity  of  powdered 
black  sulphuret  of  antimony,  purchased  from  one  of  our  whole- 
sale houses,  was  boiled  with  hydrochloric  acid,  in  order  to  pre- 
pare the  officinal  "  solutio  antimonii  terchloridi "  (butter  of 
antimony.)  It  was  but  incompletely  acted  on,  and  the  solution 
after  cooling,  was  filled  with  numerous  crystals,  which  on  ex- 
amination were  recognized  as  chloride  of  lead.  A  portion  of  the 
black  residue  not  taken  up  by  the  hydrochloric  acid  was  also 
examined  ;  it  consisted  mainly  of  sulphuret  of  lead  (galena.) — 
The  Pharmacist,  Sept.,  1868. 
ON  THE  EXTRACTION  OF  OIL  BY  MEANS  OF  SULPHIDE 
OF  CARBON. 
By  M.  Heyl. 
A  new  and  interesting  process  for  the  extraction  of  oil  by 
means  of  sulphide  of  carbon  is  carried  out  on  a  large  scale  at 
the  manufactory  of  M.  E.  0.  Heyl,  at  Moabit,  near  Berlin. 
With  respect  to  this  method,  the  annals  of  Prussian  agricul- 
ture contain  details  which  we  now  transcribe.  An  oil  of  suffi- 
ciently good  quality  for  successful  employment  in  the  lubrication 
of  machinery,  is  manufactured  at  Moabit  at  the  daily  rate  of 
2-570  kilogrammes  ;  its  residue  forming  an  excellent  food  for 
cattle.  When  more  or  less  finely  ground,  the  latter  may  be  sent 
off  in  sacks,  and  requires  no  pulverisation  before  being  mixed 
with  hard  or  soft  water,  but  may  be  given  to  the  animals  at  once, 
thus  having  an  advantage  over  oil -cake.  The  oleaginous  grain, 
such  as  colza,  linseed,  or  mustard,  arrives  in  ships  by  the  Spree, 
and  is  raised  into  the  wharehouse  by  a  perpetual  screw,  which 
every  day  draws  up  into  the  manufactory  the  necessary  quantity 
for  the  work  (about  33  hectolitres).  It  is  then  placed  by  a  lift 
upon  a  seive  comprising  a  winnower,  and  thence  falls,  perfectly 
clean,  into  a  triturator,  the  movements  of  whose  cylinders  are 
combined  in  such  a  way  as  to  tear  rather  than  bruise  it. 
After  this  preparation,  the  grain  passes  into  a  revolving 
cylinder  of  sheet  iron,  about  0*418  m.  in  diameter,  and  heated 
from  below,  whence  it  falls  after  desiccation  into  eight  large  vats, 
each  holding  8*78  hectolitres,  and  capable  of  revolving  on  two 
horizontal  axles. 
