408 
GLEANINGS  FROM  THE  GERMAN  JOURNALS. 
yellow,  by  manipulating  as  follows :  The  wax  and  oil  are  fused 
in  a  water  bath,  the  subacetate  of  lead,  previously  heated,  is 
added  in  saaall  portions,  the  mixture  well  stirred  and  digested 
for  some  time;  finally  the  rose  water  previously  heated,  is  added. 
A  partial  saponification  and  a  subsequent  emulsion  takes  place, 
the  cerate  retaining  its  original  white  color. —  (N.  Jahrb.  f.  Ph. 
xiv.  367.    Wittst.  V.  Schr.  x.  268.) 
Arsenic  in  muriatic  acid  was  found  in  1840,  by  Wittstein,  to 
be  completely  removed  by  mercury.  Reinsch  subsequently 
found  copper  to  act  in  a  similar  manner.  The  grey  crust  with 
which  copper  becomes  covered,  he  supposed  to  be  pure  arsenic. 
Lippert  now  proves  it  to  consist  of  32As  and  68Cu  =  CugAs  ;  it 
evolves  but  little  arsenic  on  being  heated,  and  in  a  current  of 
hydrogen,  arsenic  does  not  sink  to  less  than  20  per  cent. — 
(Wittst.  y.  Schr,  x.  267,  268.) 
Cor7i  plaster. — 1  oz.  powdered  galbanum  and  10  gr.  turpen- 
tine are  softened  at  a  moderate  heat,  8  gr.  finely  pow^dered  sal- 
ammoniac  are  added,  and  the  mass  rolled  out  without  employing 
oil  or  water  ;  the  plaster  is  to  be  kept  in  wax  paper  or  bladder. 
After  taking  a  foot  bath,  the  plaster  spread  upon  soft  leather  is 
applied,  and  renewed  every  other  day  after  removing  the  horny 
skin._-(Muller's  Ph.  Zeit.  1861,  No.  1.  Wittst.  V.  Schr.  x. 
265,  266.) 
Medical  properties  of  Metamorphia. — Dr.  Fronmiiller  em- 
ployed Wittstein's  metamorphia  as  a  soporific  in  7  cases,  in 
doses  of  1  gr.  ;  the  result  was  in  5  cases  complete,  in  2  partial. 
The  muriate  was  employed  in  4  cases  at  i  gr.  and  in  1  case  at 
1  gr.  The  result  was  in  three  cases  complete,  in  1  partial,  and 
in  1  unsatisfactory  (Wittst.  V.  Sch.  x.  262.) 
Coloring  matter  in  Acetic  Acid. — Phosphate  of  alumina  dis- 
solved in  potassa  ought  to  yield  a  white  precipitate  with  acetic 
acid.  Wittstein  observed  it  frequently  to  be  pale  red,  but  to 
turn  white  by  ignition.  The  colorless  acetic  acid,  therefore, 
still  contains  an  empyreumatic  coloring  principle,  probably  one 
of  the  series  of  pyrrhol. — (Wittst.  Y.  Schr.  x.  259.) 
Eemlock  among  Aniseed  has  been  observed.  In  the  Romagna, 
