GLEANINGS  FROM  GERMAN  JOURNALS. 
401 
physicians.  It  is  prepared,  according  to  the  Prussian  pharma- 
copoeia, by  maceration  of  12  parts  rhubarb  in  slices,  3  parts  car- 
bonate of  potassa  and  16  parts  of  spirituous  cinnamon  water. 
After  12  hours  the  pulp  is  expressed  and  the  liquid  filtered. 
This  preparation  is  very  liable  to  deterioration,  and  its  preserva- 
tion has  been.a  constant  subject  of  suggestions.  Recently  C.  Bau- 
mann  applied  to  its  preservation  a  method  which  in  this  case  was 
very  successful,  and  which  perhaps  merits  consideration.  Bau- 
mann  evaporated  the  tincture  to  a  syrupy  consistency,  and  ab- 
sorbed this  by  a  weighed  quantity  of  previously  washed,  levi- 
gated and  dried  quartz  sand,  and  exsiccated  the  whole  at  a  gen- 
tle heat.  By  weighing  the  dry  mass,  the  proper  proportion  and 
the  quantity  corresponding  to  each  ounce  of  the  tincture  may 
easily  be  ascertained.  800  parts  tincture  and  310  parts  sand 
give  400  parts  dry  residue.  From  this  the  tincture  can 
readily  be  extracted  by  stirring  the  required  weight  with  the 
corresponding  quantity  of  water,  and  by  decantation  or  filtration 
if  necessary. — Pharm.  Cent,  H.  1870,  No.  19. 
GLEANINGS  FROM  GERMAN  JOURNALS. 
By  John  M.  Maisch. 
Cinchona  barks  from  Java. — Of  the  first  9  bales  of  cinchona 
barks  received  a  few  months  ago  from  Java,  by  the  Dutch  gov- 
ernment, Julius  Jobst  has  received  four  samples,  which  had  been 
assayed  by  Prof.  Gunning,  of  Amsterdam,  and  subsequently  by 
Jobst,  with  the  following  results.  The  marks  are  those  of  the 
Dutch  "  maatschappy"  : 
No.  I.  T.  P.  Java  Royal  Cinchona. — Alkaloids  :  3-5  per  cent, 
soluble  in  ether  (much  quinidia),  2*0  per  cent,  insoluble  in  ether. 
G.^ — 3-2  per  cent,  alkaloids :  much  quinidia  and  cinchonia,  trace 
of  quinia,  no  cinchonidia  an  amorphous  base,  the  examination 
of  which  is  promised.  J. 
Nos.  II  &  III.  T.  P.  Java  Royal  Cinchona.— Alkaloids :  24 
per  cent,  soluble  (with  little  quinidia),  1*3  per  cent,  insoluble  in 
ether.    G. — 3*5  per  cent,  alkaloids,  with  1-7  quinia  =  2-3  sul- 
*  Conchinin  of  Jobst's  paper  =  quinidia,  and  chinidin  =  cinchonidia 
of  Pasteur.--J.  M.  M. 
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