AmMay!ilSarm'}      Gleanings  from  the  German  Journals.  245 
amount  of  soda-lye.  If  linoleic  acid  be  present  an  intense  yellow 
color  is  produced ;  if  the  oleic  acid  be  pure,  the  reaction  is  of  a  gray 
color. — Jour,  de  Ph.  et  de  Chim.,  March  1. 
Raisin  Wine. — M.  Palangie  recommends  the  following  formula  : 
Corinth  raisins,  25k.;  sugar,  4k.;  fresh  grapes,  lk.;  tartaric  acid,  25 
gm.  Exhaust  the  raisins  with  three  waters  ;  press  and  unite ,  all  the 
liquors  in  a  cask.  Dissolve  the  sugar  and  tartaric  acid  in  water  and 
boil  for  a  few  minutes ;  add  this  to  the  other  liquors,  with  water  to 
make  a  hectoliter ;  then  add  the  grapes,  previously  bruised,  and  keep 
the  mixture  at  a  temperature  of  77 °F.  In  48  hours  from  the  begin- 
ning of  fermentation  the  air  in  the  cask  must  be  renewed,  and  this 
must  be  repeated  daily  until  fermentation  ceases.  The  wine  should 
stand  for  a  month  before  bottling. — Jour,  de  Phar.  et  de  Chim., 
March  15. 
Preservation  of  Colored  Anatomical  Specimens. — Alco- 
hol changes,  and  often  destroys,  the  coloring  matters  of  these  objects. 
Mr.  Fabre-Domergue  proposes  a  syrup  in  accordance  with  the 
following  formula :  Syrup  of  glucose,  of  25°  B.  (specific  gravity, 
1*210),  1000  gm.;  white  glycerin,  100  gm.;  methylic  alcohol,  200  gm.; 
camphor,  q.  s.  The  glucose  is  dissolved  in  hot  water  ;  after  cooling, 
the  other  articles  are  added,  with  "  a  few  pinches  "  of  powdered  cam- 
phor. The  liquor  should  be  neutralized  with  a  little  soda  or  potash 
lye ;  it  should  then  be  filtered  and  a  little  camphor  should  be  dusted 
over  the  surface. — Nouv.  Rem.,  March  24. 
GLEANINGS  FROM  THE  GERMAN  JOURNALS. 
By  Frank  X.  Mcerk,  Ph.  G. 
Blue  litmus  paper  made  by  neutralizing  an  aqueous  solution  of  lit- 
mus with  phosphoric  acid  is  liable  to  wrongly  indicate  the  reaction  of 
some  solutions ;  the  aqueous  solution  of  litmus  in  addition  to  the  po- 
tassium salt  of  the  coloring  matter  contains  the  carbonates  of  potas- 
sium and  ammonium,  which,  with  phosphoric  acid,  form  the  acid 
salts,  K2HP04  and  (NH4)2HP04,  with  alkaline  reactions,  and  cer- 
tain quantities  of  phosphoric  acid  can  be  added  to  solutions  of  these 
salts  without  the  production  of  an  acid  reaction  ;  such  a  paper  brought 
in  contact  with  neutral  solutions  of  Ca,  Ba,  Sr  and  Ag  invariably  in- 
dicates an  acid  reaction  due  to  formation  of  acid  phosphates  of  these 
